WIP: Apply suggestions from code review

Co-authored-by: Grant Gainey <ggainey@users.noreply.github.com>

pulpcore/app/serializers/base.py

@@ -208,7 +208,7 @@ def to_representation(self, data):
                 if repo_ver_mapping is not None:
                     if repo_ver := repo_ver_mapping.get(data.object_id):
                         return self.repo_ver_url(repo_ver, request=request)
-                    return "<unavailabe>"
+                    return "<unavailable>"
             else:
                 try:
                     view_name = get_view_name_for_model(model, "detail")
@@ -229,7 +229,7 @@ def to_representation(self, data):
         # Fallback onto normal lookup:
         # If the content object was deleted
         if data.content_object is None:
-            return "<unavailabe>"
+            return "<unavailable>"
         try:
             if not data.content_object.complete:
                 return "<unavailable>"