Fix tab to spaces in web.config

public/web.config

@@ -15,7 +15,7 @@
             <add input="{REQUEST_FILENAME}" matchType="IsDirectory" ignoreCase="false" negate="true" />
             <add input="{REQUEST_FILENAME}" matchType="IsFile" ignoreCase="false" negate="true" />
           </conditions>
-	  <action type="Rewrite" url="index.php" />
+          <action type="Rewrite" url="index.php" />
         </rule>
       </rules>
     </rewrite>