Fix duplicate ID

Author: Gert-dev

index.html

@@ -357,7 +357,7 @@ <h2 id="is-it-really-exclusive-to-atom">Is it really exclusive to Atom?</h2>
             <a href="https://gitlab.com/php-integrator/core">has been split off into a separate repository for reuse</a>.
         </p>
 
-        <h2 id="is-it-really-exclusive-to-atom">What about making it a language server?</h2>
+        <h2 id="what-about-making-it-a-language-server">What about making it a language server?</h2>
         <p>
             The Language Server Protocol has gathered some interest of late. Currently the core is not a compliant
             language server, but it already is a socket server using JSON-RPC for communication. Becoming compliant with