diff --git a/docs/troubleshooting.md b/docs/troubleshooting.md
index b9b7bc5f2..b103119d9 100644
--- a/docs/troubleshooting.md
+++ b/docs/troubleshooting.md
@@ -34,7 +34,7 @@ Operating systems: :fontawesome-brands-apple:
 
     ``` sh
     pip install mkdocs-material
-    # => Could not install packages due to an EnvironmentError: [Errno 13] Permission denied: '...'  
+    # => Could not install packages due to an EnvironmentError: [Errno 13] Permission denied: '...'
     # => Consider using the --user option or check the permissions.
     ```
 
diff --git a/docs/upgrading.md b/docs/upgrading.md
index 5908f858a..1e7994a18 100644
--- a/docs/upgrading.md
+++ b/docs/upgrading.md
@@ -135,7 +135,7 @@ was renamed to `separator`:
     extra:
       search:
         language: en, de, ru
-        tokenizer: [\s\-\.]+
+        tokenizer: '[\s\-\.]+'
     ```
 
   [6]: setup/setting-up-site-search.md#built-in-search