Fix copyright, author, and extra_footer values

Author: stevepiercy

docs/conf.py

@@ -18,16 +18,9 @@
 # -- Project information -----------------------------------------------------
 
 project = "Plone Documentation"
-copyright = """The text and illustrations in this website are licensed by the 
-Plone Foundation under a Creative Commons Attribution 4.0 International license.
-Plone and the Plone<sup>®</sup> logo are registered trademarks of the Plone
-Foundation, registered in the United States and other countries.
-For guidelines on the permitted uses of the Plone trademarks,
-see https://plone.org/foundation/logo
-All other trademarks are owned by their respective owners."""
-author = "Plone Community"
+copyright = "Plone Foundation"
+author = "the Plone community"
 trademark_name = "Plone"
-
 now = datetime.now()
 year = str(now.year)
 
@@ -190,6 +183,7 @@
         <a href="https://plone.org">
             <img src="/_static/logo.svg" alt="plone.org" /> plone.org</a>
     </p>""",
+    "extra_footer": """The text and illustrations in this website are licensed by the Plone Foundation under a Creative Commons Attribution 4.0 International license. Plone and the Plone® logo are registered trademarks of the Plone Foundation, registered in the United States and other countries. For guidelines on the permitted uses of the Plone trademarks, see <a href="https://plone.org/foundation/logo">https://plone.org/foundation/logo</a>. All other trademarks are owned by their respective owners.""",
 }
 
 # The name for this set of Sphinx documents.  If None, it defaults to