Fix comment format in http.h

Functions decl must follow comment to be correctly documented

PUBLISHED_FROM=6ab035cda470c2c23240db4435abd8c241c71b0d

docs/c-api/http.h/mg_connect_ws_opt.md

@@ -0,0 +1,17 @@
+---
+title: "mg_connect_ws_opt()"
+decl_name: "mg_connect_ws_opt"
+symbol_kind: "func"
+signature: |
+  struct mg_connection *mg_connect_ws_opt(struct mg_mgr *mgr,
+                                          mg_event_handler_t ev_handler,
+                                          struct mg_connect_opts opts,
+                                          const char *url, const char *protocol,
+                                          const char *extra_headers);
+---
+
+Helper function that creates an outbound WebSocket connection
+
+Mostly identical to mg_connect_ws, but allows to provide extra parameters
+(for example, SSL parameters 
+