[Docs] Add missing descriptions for function returns (#3054)

* docs: add missing descriptions for function returns

* chore(changelog): add towncrier entry

changelog.d/3054.docs.rst

@@ -0,0 +1 @@
+Add missing descriptions for function returns.

redbot/cogs/downloader/repo_manager.py

@@ -612,7 +612,7 @@ class RepoManager:
         Returns
         -------
         `tuple` of `str`
-
+            Repo names.
         """
         # noinspection PyTypeChecker
         return tuple(self._repos.keys())

redbot/core/bot.py

@@ -303,10 +303,12 @@ class RedBase(commands.GroupMixin, commands.bot.BotBase, RPCMixin):  # pylint: d
         Parameters
         ----------
         location : `discord.abc.Messageable`
+            Location to check embed color for.
         
         Returns
         -------
         discord.Color
+            Embed color for the provided location.
         """
 
         guild = getattr(location, "guild", None)
@@ -493,6 +495,7 @@ class RedBase(commands.GroupMixin, commands.bot.BotBase, RPCMixin):  # pylint: d
         Parameters
         ----------
         service_name: str
+            The service to get tokens for.
 
         Returns
         -------

redbot/core/config.py

@@ -1275,6 +1275,7 @@ class Config:
         Returns
         -------
         asyncio.Lock
+            A lock for all guild data.
         """
         return self.get_custom_lock(self.GUILD)
 
@@ -1284,6 +1285,7 @@ class Config:
         Returns
         -------
         asyncio.Lock
+            A lock for all channels data.
         """
         return self.get_custom_lock(self.CHANNEL)
 
@@ -1293,6 +1295,7 @@ class Config:
         Returns
         -------
         asyncio.Lock
+            A lock for all roles data.
         """
         return self.get_custom_lock(self.ROLE)
 
@@ -1302,6 +1305,7 @@ class Config:
         Returns
         -------
         asyncio.Lock
+            A lock for all user data.
         """
         return self.get_custom_lock(self.USER)
 
@@ -1317,6 +1321,9 @@ class Config:
         Returns
         -------
         asyncio.Lock
+            A lock for all member data for the given guild.
+            If ``guild`` is omitted this will give a lock
+            for all data for all members in all guilds.
         """
         if guild is None:
             return self.get_custom_lock(self.GUILD)
@@ -1342,6 +1349,7 @@ class Config:
         Returns
         -------
         asyncio.Lock
+            A lock for all data in a custom scope with given group identifier.
         """
         try:
             pkey_len, is_custom = ConfigCategory.get_pkey_info(

redbot/core/data_manager.py

@@ -214,6 +214,7 @@ def storage_type() -> str:
     Returns
     -------
     str
+        Storage type.
     """
     try:
         return basic_config["STORAGE_TYPE"]
@@ -229,5 +230,6 @@ def storage_details() -> dict:
     Returns
     -------
     dict
+        Storage details.
     """
     return basic_config.get("STORAGE_DETAILS", {})

redbot/core/drivers/mongo.py

@@ -113,6 +113,7 @@ class MongoDriver(BaseDriver):
         attributes of :py:class:`core.config.Config`.
 
         :param str category:
+            The group identifier of a category.
         :return:
             PyMongo collection object.
         """

redbot/core/modlog.py

@@ -561,7 +561,7 @@ class CaseType:
         Returns
         -------
         CaseType
-
+            The case type object created from given data.
         """
         data_copy = data.copy()
         data_copy.pop("name", None)
@@ -808,6 +808,7 @@ async def get_casetype(name: str, guild: Optional[discord.Guild] = None) -> Opti
     Returns
     -------
     Optional[CaseType]
+        Case type with provided name. If such case type doesn't exist this will be `None`.
     """
     data = await _conf.custom(_CASETYPES, name).all()
     if not data: