update middleware docs formatting

Author: amirreza8002

docs/middleware/base.md

@@ -10,13 +10,13 @@ with the following specification:
 >>> middleware = AsyncMiddlewareMixin(get_response)
 >>> await middleware()
 ```
-where `get_response` is an async function, sync functions are not supported and will raise an error.
+where `get_response` is an **async function**, sync functions are not supported and **will raise** an error.
 
 ----------------------------
 
 other methods are as follows:
 
-* `process_request` and `process_response` are `await`ed inside the middleware and have to be async
+* `process_request` and `process_response` are `await`ed inside the middleware and **have to be async**
 
 * `process_view` and `process_template_response` can be either sync or async, but **async is preferred**, if it's sync django will wrap it as async which might have slight performance reduction.