Referring to bezier.libs/ instead of bezier/.libs/.

See:

- https://github.com/pypa/auditwheel/releases/tag/3.1.0
- pypa/auditwheel#90

docs/python/binary-extension.rst

@@ -45,7 +45,7 @@ against these local copies of dependencies.
 Linux
 =====
 
-The command line tool `auditwheel`_ adds a ``bezier/.libs`` directory
+The command line tool `auditwheel`_ adds a ``bezier.libs`` directory
 with a modified ``libbezier`` and all of its dependencies (e.g.
 ``libgfortran``)
 
@@ -64,7 +64,7 @@ with a modified ``libbezier`` and all of its dependencies (e.g.
    # macOS specific.
    dylibs_directory = os.path.join(base_dir, ".dylibs")
    # Linux specific.
-   libs_directory = os.path.join(base_dir, ".libs")
+   libs_directory = os.path.abspath(os.path.join(base_dir, "..", "bezier.libs"))
 
 
    def invoke_shell(*args):
@@ -74,6 +74,18 @@ with a modified ``libbezier`` and all of its dependencies (e.g.
        output_bytes = subprocess.check_output(args, cwd=base_dir)
        print(output_bytes.decode("utf-8"), end="")
 
+.. doctest:: linux-libs
+   :linux-only:
+
+   >>> libs_directory
+   '.../site-packages/bezier.libs'
+   >>> print_tree(libs_directory)
+   bezier.libs/
+     libbezier-28a97ca3.so.2020.2.3
+     libgfortran-2e0d59d6.so.5.0.0
+     libquadmath-2d0c479f.so.0.0.0
+     libz-eb09ad1d.so.1.2.3
+
 The ``bezier._speedup`` module depends on this local copy of ``libbezier``:
 
 .. testcode:: linux-readelf-py
@@ -88,26 +100,26 @@ The ``bezier._speedup`` module depends on this local copy of ``libbezier``:
 
    Dynamic section at offset 0x43e000 contains 27 entries:
      Tag        Type                         Name/Value
-    0x000000000000000f (RPATH)              Library rpath: [$ORIGIN/.libs]
+    0x000000000000000f (RPATH)              Library rpath: [$ORIGIN/../bezier.libs]
     0x0000000000000001 (NEEDED)             Shared library: [libbezier-28a97ca3.so.2020.2.3]
     0x0000000000000001 (NEEDED)             Shared library: [libpthread.so.0]
     0x0000000000000001 (NEEDED)             Shared library: [libc.so.6]
     0x000000000000000c (INIT)               0x9d40
    ...
 
 and the local copy of ``libbezier`` depends on the other dependencies in
-``.libs/`` (both directly and indirectly):
+``bezier.libs/`` (both directly and indirectly):
 
 .. testcode:: linux-readelf-lib
    :hide:
 
-   invoke_shell("readelf", "-d", ".libs/libbezier-28a97ca3.so.2020.2.3")
-   invoke_shell("readelf", "-d", ".libs/libgfortran-2e0d59d6.so.5.0.0")
+   invoke_shell("readelf", "-d", "../bezier.libs/libbezier-28a97ca3.so.2020.2.3")
+   invoke_shell("readelf", "-d", "../bezier.libs/libgfortran-2e0d59d6.so.5.0.0")
 
 .. testoutput:: linux-readelf-lib
    :linux-only:
 
-   $ readelf -d .libs/libbezier-28a97ca3.so.2020.2.3
+   $ readelf -d ../bezier.libs/libbezier-28a97ca3.so.2020.2.3
 
    Dynamic section at offset 0x44dd8 contains 28 entries:
      Tag        Type                         Name/Value
@@ -118,7 +130,7 @@ and the local copy of ``libbezier`` depends on the other dependencies in
     0x000000000000000e (SONAME)             Library soname: [libbezier-28a97ca3.so.2020.2.3]
     0x000000000000000c (INIT)               0x2be8
    ...
-   $ readelf -d .libs/libgfortran-2e0d59d6.so.5.0.0
+   $ readelf -d ../bezier.libs/libgfortran-2e0d59d6.so.5.0.0
 
    Dynamic section at offset 0x207db8 contains 31 entries:
      Tag        Type                         Name/Value
@@ -138,23 +150,6 @@ and the local copy of ``libbezier`` depends on the other dependencies in
 
 .. _auditwheel: https://github.com/pypa/auditwheel
 
-.. doctest:: linux-libs
-   :linux-only:
-
-   >>> libs_directory
-   '.../site-packages/bezier/.libs'
-   >>> libs_parent = os.path.dirname(libs_directory)  # Temporary
-   >>> libs_parent  # Temporary
-   '.../site-packages/bezier'
-   >>> print_tree(libs_parent)  # Temporary
-   -1
-   >>> print_tree(libs_directory)
-   .libs/
-     libbezier-28a97ca3.so.2020.2.3
-     libgfortran-2e0d59d6.so.5.0.0
-     libquadmath-2d0c479f.so.0.0.0
-     libz-eb09ad1d.so.1.2.3
-
 macOS
 =====