fix(docs): Fix linkcheck, ignore old changelogs and migrating

Signed-off-by: Lala Sabathil <lala@pycord.dev>

Author: Lulalaby

docs/conf.py

@@ -487,6 +487,12 @@ def write_new():
     r"https://packages.debian.org/.*",
 ]
 
+linkcheck_exclude_documents = [
+    r"migrating_to_v1.rst",
+    r"migrating_to_v2.rst",
+    r"old_changelog.rst"
+]
+
 linkcheck_anchors_ignore_for_url = [r"https://github.com/Delitefully/DiscordLists"]
 
 modindex_common_prefix = ["discord."]