Set canonical URL to v3.0.1 one

Signed-off-by: Arthit Suriyawongkul <arthit@gmail.com>

mkdocs.yml

@@ -10,7 +10,7 @@ theme: readthedocs
 plugins:
 - search
 - mike:
-    canonical_version: latest  # tell search engines to prefer the latest version
+    canonical_version: v3.0.1  # tell search engines to prefer v3.0.1 version
     alias_type: redirect  # use redirect so the URL in the browser changes
 - pdf-export:
     combined: true
@@ -24,8 +24,8 @@ markdown_extensions:
 strict: true
 validation:
   nav:
-    omitted_files: info  # allow during development where there are moving parts
-    not_found: info      # allow during development where there are moving parts
+    omitted_files: warn  # set to "info" to be less strict during development where there are moving parts
+    not_found: warn
     absolute_links: warn
   links:
     not_found: warn