doc: capitalize third party service name.

Author: Vedant-Gandhi

README.md

@@ -101,7 +101,7 @@ To purge a page immediately, follow these instructions:
 
 **Q. Does it need any kind of URL structure?**
 
-Yes. When setting the URL structure in nginx configuration file a trailing slash should always be added.
+Yes. When setting the URL structure in Nginx configuration file a trailing slash should always be added.
 
 ### FAQ - Nginx Redis Cache ###
 

readme.txt

@@ -95,7 +95,7 @@ To purge a page immediately, follow these instructions:
 
 **Q. Does it need any kind of URL structure?**
 
-Yes. When setting the URL structure in nginx configuration file a trailing slash should always be added.
+Yes. When setting the URL structure in Nginx configuration file a trailing slash should always be added.
 
 = FAQ - Nginx Redis Cache =