Minor fixes in example code

Author: jeroenherczeg

doc/search.md

@@ -15,23 +15,23 @@ Returns a list of repositories found by such criteria.
 ### Search code
 
 ```php
-$repos = $client->api('search')->code('@todo language:php');
+$files = $client->api('search')->code('@todo language:php');
 ```
 
 Returns a list of files found by such criteria (containing "@todo" and language==php).
 
 ### Search issues
 
 ```php
-$repos = $client->api('search')->issues('bug language:php');
+$issues = $client->api('search')->issues('bug language:php');
 ```
 
 Returns a list of issues found by such criteria.
 
 ### Search users
 
 ```php
-$repos = $client->api('search')->users('location:Amsterdam language:php');
+$users = $client->api('search')->users('location:Amsterdam language:php');
 ```
 
 Returns a list of users found by such criteria.
@@ -42,7 +42,7 @@ You can sort results using 2-3 arguments.
 
 ```php
 $repos = $client->api('search')->repositories('...', 'created', 'asc');
-$repos = $client->api('search')->code('...........', 'indexed', 'desc');
-$repos = $client->api('search')->issues('.........', 'comments', 'asc');
-$repos = $client->api('search')->users('..........', 'followers', 'asc');
+$files = $client->api('search')->code('...........', 'indexed', 'desc');
+$issues = $client->api('search')->issues('.........', 'comments', 'asc');
+$users = $client->api('search')->users('..........', 'followers', 'asc');
 ```