Do not show empty version_added_collection values in ansible-doc text output. (#74999) (#75003)

(cherry picked from commit 58450f041a)

changelogs/fragments/74999-ansible-doc-version_added_collection.yml

@@ -0,0 +1,2 @@
+bugfixes:
+- "ansible-doc - in text output, do not show empty ``version_added_collection`` values (https://github.com/ansible/ansible/pull/74999)."

lib/ansible/cli/doc.py

@@ -1033,6 +1033,10 @@ class DocCLI(CLI, RoleMixin):
             if conf:
                 text.append(DocCLI._dump_yaml({'set_via': conf}, opt_indent))
 
+            # Remove empty version_added_collection
+            if opt.get('version_added_collection') == '':
+                opt.pop('version_added_collection')
+
             for k in sorted(opt):
                 if k.startswith('_'):
                     continue