Update docs

Author: dranikpg

docs/guides/included-middleware.md

@@ -1,5 +1,5 @@
 Crow contains some middlewares that are ready to be used in your application.
-
+<br>
 Make sure you understand how to enable and use [middleware](../middleware/).
 
 ## Cookies
@@ -10,15 +10,17 @@ This middleware allows to read and write cookies by using `CookieParser`. Once e
 
 Cookies can be read and written with the middleware context. All cookie attributes can be changed as well.
 
-```c++
+```cpp
 auto& ctx = app.get_context<crow::CookieParser>(request);
 std::string value = ctx.get_cookie("key");
 ctx.set_cookie("key", "value")
     .path("/")
     .max_age(120);
 ```
 
-**Note**: Make sure the CookieParser is listed before other middleware that relies on it
+!!! note
+
+    Make sure `CookieParser` is listed before any other middleware that relies on it.
 
 ## CORS
 Include: `crow/middlewares/cors.h` <br>
@@ -30,7 +32,7 @@ The CORS rules can be modified by first getting the middleware via `#!cpp auto&
 
 `CORSRules` can  be modified using the methods `origin()`, `methods()`, `headers()`, `max_age()`, `allow_credentials()`, or `ignore()`. For more details on these methods and what default values they take go [here](../../reference/structcrow_1_1_c_o_r_s_rules.html).
 
-```c++
+```cpp
 auto& cors = app.get_middleware<crow::CORSHandler>();
 cors
   .global()

mkdocs.yml

@@ -55,7 +55,7 @@ nav:
             - Writing Tests: guides/testing.md
         - Using Crow:
             - HTTP Authorization: guides/auth.md
-            - CORS Setup: guides/CORS.md
+            - Included Middlewares: guides/included-middleware.md
         - Server setup:
             - Proxies: guides/proxies.md
             - Systemd run on startup: guides/syste.md