fix internal links to POD docs

.readthedocs.yaml

@@ -6,5 +6,7 @@ build:
   apt_packages:
     - libfile-copy-recursive-perl
   jobs:
-    post_build:
-      - perl docs/makedocs.pl --pod-only && cp -rp docs/en/html/integrating/api/ "$READTHEDOCS_OUTPUT/html/integrating/api"
+    pre_build:
+      - mkdir -p "$READTHEDOCS_OUTPUT/html/integrating/api"
+      - perl docs/makedocs.pl --pod-only
+      - cp -rp docs/en/html/integrating/api/ "$READTHEDOCS_OUTPUT/html/integrating/api"

docs/en/rst/conf.py

@@ -383,13 +383,10 @@
 # Temporary highlighting of TODO items
 todo_include_todos = False
 
-# The readthedocs.org website cannot access POD.
-on_rtd = os.environ.get('READTHEDOCS', None) == 'True'
-
-if on_rtd:
-    base_api_url = 'https://www.bugzilla.org/docs/5.0/en/html/integrating/api/'
-else:
-    base_api_url = '../integrating/api/'
+# Originally, the readthedocs.org website could not access POD,
+# so we would conditionally override that here if we were building
+# on RTD, but that's no longer the case.
+base_api_url = '../integrating/api/'
 
 extlinks = {'bug': ('https://bugzilla.mozilla.org/show_bug.cgi?id=%s', 'bug  '),
             'api': (base_api_url + '%s', '')}