docs(site): document new command-line options for the scan command.

Add documentation for `--print-meta`, `--print-tags` and `--tag`.

site/content/docs/intro/cli.md

@@ -148,14 +148,6 @@ run:
 yr scan --output-format ndjson rules/test.yara /bin | jq .path
 ```
 
-### --print-strings, -s
-
-Prints the matching patterns or strings.
-
-### --print-namespace, -e
-
-Prints the namespace of matching rules.
-
 ### --path-as-namespace
 
 Use the path of each YARA source file as its namespace.
@@ -166,6 +158,22 @@ same namespace, YARA is going to complain about the duplicated rule identifiers.
 However, if every file is put under its own namespace the rule names won't
 collide.
 
+### --print-meta, -m
+
+Prints the metadata associated to matching rules.
+
+### --print-namespace, -e
+
+Prints the namespace of matching rules.
+
+### --print-strings, -s
+
+Prints the matching patterns or strings.
+
+### --print-tags, -g
+
+Print the tags associated to matching rules.
+
 ### --relaxed-re-syntax
 
 Use a more relaxed syntax check while parsing regular expressions.
@@ -191,6 +199,10 @@ must be either absolute paths, or relative to the current directory.
 
 Skips files larger than the given size in bytes.
 
+### --tag <TAG>, -t <TAG>
+
+Print only the matching rules that have the given tag.
+
 ### --threads, -p <NUM_THREADS>
 
 Use the specified number of threads. By default, it uses as many threads as