Merge pull request #7981 from rngadam/patch-1

Elaborate on type of links supported

src/pip/_internal/cli/cmdoptions.py

@@ -367,9 +367,11 @@ def find_links():
         action='append',
         default=[],
         metavar='url',
-        help="If a url or path to an html file, then parse for links to "
-             "archives. If a local path or file:// url that's a directory, "
-             "then look for archives in the directory listing.",
+        help="If a URL or path to an html file, then parse for links to "
+             "archives such as sdist (.tar.gz) or wheel (.whl) files. "
+             "If a local path or file:// URL that's a directory,  "
+             "then look for archives in the directory listing. "
+             "Links to VCS project URLs are not supported.",
     )