[ci skip] Fix #3515
diff --git a/user_guide_src/source/conf.py b/user_guide_src/source/conf.py
index 482d493..d65fe0d 100644
--- a/user_guide_src/source/conf.py
+++ b/user_guide_src/source/conf.py
@@ -69,11 +69,11 @@
# The reST default role (used for this markup: `text`) to use for all documents.
#default_role = None
-# If true, '()' will be appended to :func: etc. cross-reference text.
+# If true, '()' will be appended to :php:func: etc. cross-reference text.
#add_function_parentheses = True
# If true, the current module name will be prepended to all description
-# unit titles (such as .. function::).
+# unit titles (such as .. php:function::).
#add_module_names = True
# If true, sectionauthor and moduleauthor directives will be shown in the