Fix bug in create_django_issue

Parsing doesn't work for classifiers that only
include the Django major version, e.g.:
``'Framework :: Django :: 3'`

We need a '.' in the 4th part of the classifier
to be able to parse it:
``'Framework :: Django :: 3.2'`

scripts/create_django_issue.py

@@ -212,7 +212,7 @@ def get_compatibility(self, package_name: str, package_info: dict, needed_dj_ver
         for classifier in package_info["info"]["classifiers"]:
             # Usually in the form of "Framework :: Django :: 3.2"
             tokens = classifier.split(" ")
-            if len(tokens) >= 5 and tokens[2].lower() == "django":
+            if len(tokens) >= 5 and tokens[2].lower() == "django" and "." in tokens[4]:
                 version = DjVersion.parse(tokens[4])
                 if len(version) == 2:
                     supported_dj_versions.append(version)