Fixed grammar in a comment.

src/http/ngx_http_core_module.c

diff --git a/src/http/ngx_http_core_module.c b/src/http/ngx_http_core_module.c
index e98d0d1..1a6d48e 100644
--- a/src/http/ngx_http_core_module.c
+++ b/src/http/ngx_http_core_module.c
@@ -3373,7 +3373,7 @@
                                              ngx_cacheline_size);
 
     /*
-     * the special handling the "types" directive in the "http" section
+     * the special handling of the "types" directive in the "http" section
      * to inherit the http's conf->types_hash to all servers
      */