Fixing for lexer

src/site/markdown/nginx-archiva.md

 # nginx configuration for Archiva
 Archiva only needs a basic HTTP Proxy configuration with [CloudFlare] Origin SSL.
 
-```nginx.conf
+```nginx
 server {
   listen 0.0.0.0:80;
   listen [::]:80;

src/site/markdown/nginx-gitlab-pages.md

 # nginx for GitLab
 Only a few modifications here, for use with [CloudFlare] Origin SSL.
 
-```nginx.conf
+```nginx
 ## GitLab
 ##
 

src/site/markdown/your-tools.md

@@ -31,7 +31,7 @@ Host mc.felinewtih.me
 ```
 
 ## Git
-```example.gitconfig
+```example.config
 [user]
 	name = My Name
 	email = [email protected]