Sort docs API entries alphabetically

PUBLISHED_FROM=73ef8ae768585d3c204e6e022848f49e8f4a8de2

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

@@ -3,19 +3,19 @@ title: "Common API reference"
 symbol_kind: "intro"
 decl_name: "http.h"
 items:
-  - { name: mg_set_protocol_http_websocket.md }
-  - { name: mg_send_websocket_handshake.md }
-  - { name: mg_send_websocket_handshake2.md }
   - { name: mg_connect_ws.md }
   - { name: mg_connect_ws_opt.md }
+  - { name: mg_printf_websocket_frame.md }
   - { name: mg_send_websocket_frame.md }
   - { name: mg_send_websocket_framev.md }
-  - { name: mg_printf_websocket_frame.md }
+  - { name: mg_send_websocket_handshake.md }
+  - { name: mg_send_websocket_handshake2.md }
+  - { name: mg_set_protocol_http_websocket.md }
   - { name: mg_url_decode.md }
   - { name: struct_http_message.md }
-  - { name: struct_websocket_message.md }
   - { name: struct_mg_http_multipart_part.md }
   - { name: struct_mg_ssi_call_ctx.md }
+  - { name: struct_websocket_message.md }
 ---