Fix broken callout tags

Author: Aaron Carlino

docs/en/00_Getting_Started/03_Environment_Management.md

@@ -65,7 +65,7 @@ SilverStripe\Core\Injector\Injector:
 ```
 
 [info]
-<p>Environment variables cannot be used outside of Injector config as of version 4.2.</p>
+Environment variables cannot be used outside of Injector config as of version 4.2.
 [/info]
 
 

docs/en/02_Developer_Guides/01_Templates/03_Requirements.md

@@ -82,7 +82,7 @@ When rendered in HTML code, these URLs will be rewritten to their matching path
 
 **<my-module-dir>/templates/SomeTemplate.ss**
 
-```ss
+```
 <% require css("<my-module-dir>/css/some_file.css") %>
 <% require themedCSS("some_themed_file") %>
 <% require javascript("<my-module-dir>/javascript/some_file.js") %>