Fix param name in TagRefernece docstring and add info

The "reference" parameter was listed as "ref" in the docstring.
This fixes that, slightly expands its description, and also adds
documentation for the "repo" parameter.

Author: EliahKagan

git/refs/tag.py

@@ -72,7 +72,8 @@ def commit(self) -> "Commit":  # type: ignore[override]  # LazyMixin has unrelat
     def tag(self) -> Union["TagObject", None]:
         """
         :return:
-            Tag object this tag ref points to or None in case we are a lightweight tag
+            Tag object this tag ref points to, or ``None`` in case we are a lightweight
+            tag
         """
         obj = self.object
         if obj.type == "tag":
@@ -96,13 +97,17 @@ def create(
     ) -> "TagReference":
         """Create a new tag reference.
 
+        :param repo:
+            The :class:`~git.repo.base.Repo` to create the tag in.
+
         :param path:
             The name of the tag, e.g. ``1.0`` or ``releases/1.0``.
             The prefix ``refs/tags`` is implied.
 
-        :param ref:
+        :param reference:
             A reference to the :class:`~git.objects.base.Object` you want to tag.
-            The Object can be a commit, tree or blob.
+            The referenced object can be a :class:`~git.objects.commit.Commit`,
+            :class:`~git.objects.tree.Tree`, or :class:`~git.objects.blob.Blob`.
 
         :param logmsg:
             If not None, the message will be used in your tag object. This will also