fix manual gitlab links

docs/source/internal/contributing.rst

@@ -51,7 +51,7 @@ Filing a Bug
 ============
 
 When filing a bug against |Flake8|, please fill out the issue template as it
-is provided to you by `GitLab`_. If your bug is in reference to one of the
+is provided to you by `GitHub`_. If your bug is in reference to one of the
 checks that |Flake8| reports by default, please do not report them to |Flake8|
 unless |Flake8| is doing something to prevent the check from running or you
 have some reason to believe |Flake8| is inhibiting the effectiveness of the
@@ -131,7 +131,7 @@ documentation generation and refresh the documentation you're working on.
 Contributing Code
 =================
 
-|Flake8| development happens on `GitLab`_. Code contributions should be
+|Flake8| development happens on `GitHub`_. Code contributions should be
 submitted there.
 
 Merge requests should:
@@ -202,8 +202,8 @@ delivered.
 .. _tox:
     https://tox.readthedocs.io/
 
-.. _GitLab:
-    https://gitlab.com/pycqa/flake8
+.. _GitHub:
+    https://github.com/pycqa/flake8
 
 .. _pycodestyle:
     https://github.com/pycqa/pycodestyle

docs/source/manpage.rst

@@ -144,4 +144,4 @@ McCabe: https://github.com/pycqa/mccabe
 BUGS
 ====
 
-Please report all bugs to https://gitlab.com/pycqa/flake8
+Please report all bugs to https://github.com/pycqa/flake8

docs/source/plugin-development/registering-plugins.rst

@@ -40,7 +40,7 @@ like:
         description="our extension to flake8",
         author="Me",
         author_email="example@example.com",
-        url="https://gitlab.com/me/flake8_example",
+        url="https://github.com/me/flake8_example",
         packages=[
             "flake8_example",
         ],

docs/source/user/using-hooks.rst

@@ -10,7 +10,7 @@ started is to add this configuration to your ``.pre-commit-config.yaml``:
 
 .. code-block:: yaml
 
-    -   repo: https://gitlab.com/pycqa/flake8
+    -   repo: https://github.com/pycqa/flake8
         rev: ''  # pick a git hash / tag to point to
         hooks:
         -   id: flake8