PEP 825: reflow "backwards compatibility" section over line width

Signed-off-by: Michał Górny <mgorny@quansight.com>

Author: mgorny

peps/pep-0825.rst

@@ -886,11 +886,12 @@ metadata. For example, there is an `open discussion in packaging project
 how to adapt the parse_wheel_filename() function
 <https://github.com/pypa/packaging/issues/1148>`__.
 
-The addition of the variant label increases the filename length. On platforms
-with a low total path length limit such as Windows, long filenames are a
-concern. However, given that the name and version components are already
-unrestricted, we do not set a specific limit in this PEP. Others, such as PyPI,
-may set a limit for total filename length.
+The addition of the variant label increases the filename length. On
+platforms with a low total path length limit such as Windows, long
+filenames are a concern. However, given that the name and version
+components are already unrestricted, we do not set a specific limit in
+this PEP. Others, such as PyPI, may set a limit for total filename
+length.
 
 Aside from this explicit incompatibility, the specification makes
 minimal and non-intrusive changes to the binary package format. The
@@ -901,10 +902,10 @@ preserve the contents of said directory.
 
 If the new `environment markers`_ are used in wheel dependencies, these
 wheels will be incompatible with existing tools. For example, upon
-meeting these markers in a dependency from an index, pip will backtrack and
-use an older dependency version (if possible). This is a general problem
-with the design of environment markers, and not specific to wheel
-variants. It is possible to work around it by partially evaluating
+meeting these markers in a dependency from an index, pip will backtrack
+and use an older dependency version (if possible). This is a general
+problem with the design of environment markers, and not specific to
+wheel variants. It is possible to work around it by partially evaluating
 environment markers at build time, and removing the markers or
 dependencies specific to variant wheels from the non-variant wheel.