src: nitrogen.1: remove carriage-return in favor of a plain newline

src/nitrogen.1

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-.TH NITROGEN 1 "JANUARY 2016" "NITROGEN" "NITROGEN"
-.SH NAME
-nitrogen \- X11 background previewer and setter
-.SH SYNOPSIS
-.B nitrogen [
-.I OPTIONS
-.B ]
-.I DIRECTORY?
-.SH DESCRIPTION
-In normal working mode, provides an interface which displays all pictures in the given DIRECTORY.  From this interface, it is possible to set the X11 root pixmap either temporarily or set and store the picture, drawing mode, and X display for restoration later.  If no directory is specified, it uses the stored directories in your "library" (as of 1.5). See the Preferences dialog.
-.P
-When the --restore option is passed, nitrogen sets all backgrounds that it has a configuration for and exits immediately, for use in an .xinitrc or .xsession file.
-.SH OPTIONS
-.IP --restore
-Restores previously saved pictures to the root displays.
-.IP --no-recurse
-Do not recurse into subdirectories of DIRECTORY.
-.IP --sort=[option]
-Sorts the background list by the given option.  By default, items are sorted as they are found on the filesystem, giving a quasi-newest first sorting order.  Valid options are:
-.RS
-.IP alpha
-Alphabetical order.
-.IP ralpha
-Reverse alphabetical order.
-.IP time
-Modified time, ascending.
-.IP rtime
-Modified time, descending.
-.RE
-.IP --set-auto
-Set the background specified by DIRECTORY using the automatic size setting.
-.IP --set-centered
-Set the background specified by DIRECTORY using the centered size setting.
-.IP --set-scaled
-Set the background specified by DIRECTORY using the scaled size setting.
-.IP --set-tiled
-Set the background specified by DIRECTORY using the tiled size setting.
-.IP --set-zoom
-Set the background specified by DIRECTORY using the zoom size setting.
-.IP --set-zoom-fill
-Set the background specified by DIRECTORY using the zoom fill size setting.
-.IP --save
-Saves the background permanently in the config. Only used with one of the --set-xxx options.
-.IP --set-color=[arg]
-Sets background color in hex, #000000 by default. Only used with one of the --set-xxx options.
-.IP --random
-Choose random background from config or given directory. Only used with one of the --set-xxx options.
-.IP --head=[option]
-Select Xinerama/multihead display in GUI, 0..n, use -1 for full screen (Xinerama only).
-.IP --force-setter=[option]
-DEBUG: Forces the background setting engine to use a specific backend. This is for advanced debugging use only. Valid options are:
-.RS
-.IP xwindows
-Standard XWindows primitives.
-.IP xinerama
-Xinerama/XWindows primitives.
-.IP gnome
-GNOME/Nautilus based.
-.RE
-.IP --help
-I'm just here so I won't get fined.
-.SH FILES
-.I ~/.config/nitrogen/
-.RS
-Holds the configuration for saved backgrounds.
-.RE
-.SH BUGS
-Use the GitHub issue tracker: https://github.com/l3ib/nitrogen/issues
-.SH AUTHORS
-Dave Foster <[email protected]>
-Javeed Shaikh <[email protected]>
-.SH AVAILABILITY
-Nitrogen is developed on GitHub: https://github.com/l3ib/nitrogen/
-
-
+.TH NITROGEN 1 "JANUARY 2016" "NITROGEN" "NITROGEN"
+.SH NAME
+nitrogen \- X11 background previewer and setter
+.SH SYNOPSIS
+.B nitrogen [
+.I OPTIONS
+.B ]
+.I DIRECTORY?
+.SH DESCRIPTION
+In normal working mode, provides an interface which displays all pictures in the given DIRECTORY.  From this interface, it is possible to set the X11 root pixmap either temporarily or set and store the picture, drawing mode, and X display for restoration later.  If no directory is specified, it uses the stored directories in your "library" (as of 1.5). See the Preferences dialog.
+.P
+When the --restore option is passed, nitrogen sets all backgrounds that it has a configuration for and exits immediately, for use in an .xinitrc or .xsession file.
+.SH OPTIONS
+.IP --restore
+Restores previously saved pictures to the root displays.
+.IP --no-recurse
+Do not recurse into subdirectories of DIRECTORY.
+.IP --sort=[option]
+Sorts the background list by the given option.  By default, items are sorted as they are found on the filesystem, giving a quasi-newest first sorting order.  Valid options are:
+.RS
+.IP alpha
+Alphabetical order.
+.IP ralpha
+Reverse alphabetical order.
+.IP time
+Modified time, ascending.
+.IP rtime
+Modified time, descending.
+.RE
+.IP --set-auto
+Set the background specified by DIRECTORY using the automatic size setting.
+.IP --set-centered
+Set the background specified by DIRECTORY using the centered size setting.
+.IP --set-scaled
+Set the background specified by DIRECTORY using the scaled size setting.
+.IP --set-tiled
+Set the background specified by DIRECTORY using the tiled size setting.
+.IP --set-zoom
+Set the background specified by DIRECTORY using the zoom size setting.
+.IP --set-zoom-fill
+Set the background specified by DIRECTORY using the zoom fill size setting.
+.IP --save
+Saves the background permanently in the config. Only used with one of the --set-xxx options.
+.IP --set-color=[arg]
+Sets background color in hex, #000000 by default. Only used with one of the --set-xxx options.
+.IP --random
+Choose random background from config or given directory. Only used with one of the --set-xxx options.
+.IP --head=[option]
+Select Xinerama/multihead display in GUI, 0..n, use -1 for full screen (Xinerama only).
+.IP --force-setter=[option]
+DEBUG: Forces the background setting engine to use a specific backend. This is for advanced debugging use only. Valid options are:
+.RS
+.IP xwindows
+Standard XWindows primitives.
+.IP xinerama
+Xinerama/XWindows primitives.
+.IP gnome
+GNOME/Nautilus based.
+.RE
+.IP --help
+I'm just here so I won't get fined.
+.SH FILES
+.I ~/.config/nitrogen/
+.RS
+Holds the configuration for saved backgrounds.
+.RE
+.SH BUGS
+Use the GitHub issue tracker: https://github.com/l3ib/nitrogen/issues
+.SH AUTHORS
+Dave Foster <[email protected]>
+Javeed Shaikh <[email protected]>
+.SH AVAILABILITY
+Nitrogen is developed on GitHub: https://github.com/l3ib/nitrogen/
+
+