docs: fix code block titles (#5733)

* docs: fix code block titles

* remove console

* fix build error

www/apps/docs/content/plugins/fulfillment/manual.md

@@ -30,7 +30,7 @@ npm install medusa-fulfillment-manual
 
 Finally, add the plugin to the `plugins` array in `medusa-config.js`:
 
-```js title=medusa-config.js
+```js title="medusa-config.js"
 const plugins = [
   // ...
   {

www/apps/docs/content/plugins/fulfillment/webshipper.md

@@ -36,7 +36,7 @@ npm install medusa-fulfillment-webshipper
 
 Next, add the plugin to the `plugins` array in `medusa-config.js`:
 
-```js title=medusa-config.js
+```js title="medusa-config.js"
 const plugins = [
   // ...
   {