[docs] fix warning -> tip (#10661)

Co-authored-by: simon-mo <simon.mo@hey.com>

doc/source/_static/css/custom.css

@@ -47,3 +47,8 @@ img.inline-figure {
   /* Override the display: block for img */
   display: inherit !important;
 }
+
+#version-warning-banner {
+  /* Make version warning clickable */
+  z-index: 1;
+}

doc/source/conf.py

@@ -114,6 +114,8 @@ extensions = [
     'versionwarning.extension',
 ]
 
+versionwarning_admonition_type = "tip"
+
 versionwarning_messages = {
     "master": (
         "This document is for the master branch. "