Update mg_set_protocol_http_websocket.md

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

@@ -6,43 +6,42 @@ signature: |
   void mg_set_protocol_http_websocket(struct mg_connection *nc);
 ---
 
-Attach built-in HTTP event handler to the given connection.
-User-defined event handler will receive following extra events:
+Attach a built-in HTTP event handler to a given connection.
+The user-defined event handler will receive the following extra events:
 
 - MG_EV_HTTP_REQUEST: HTTP request has arrived. Parsed HTTP request
  is passed as
   `struct http_message` through the handler's `void *ev_data` pointer.
-- MG_EV_HTTP_MULTIPART_REQUEST: A multipart POST request has received.
-  This event is sent before body is parsed. After this user
+- MG_EV_HTTP_MULTIPART_REQUEST: A multipart POST request has been received.
+  This event is sent before the body is parsed. After this the user
   should expect a sequence of MG_EV_HTTP_PART_BEGIN/DATA/END requests.
   This is also the last time when headers and other request fields are
   accessible.
-- MG_EV_HTTP_REPLY: HTTP reply has arrived. Parsed HTTP reply is passed as
+- MG_EV_HTTP_REPLY: HTTP reply has arrived. The parsed HTTP reply is passed as
   `struct http_message` through the handler's `void *ev_data` pointer.
 - MG_EV_HTTP_CHUNK: HTTP chunked-encoding chunk has arrived.
-  Parsed HTTP reply is passed as `struct http_message` through the
+  The parsed HTTP reply is passed as `struct http_message` through the
   handler's `void *ev_data` pointer. `http_message::body` would contain
   incomplete, reassembled HTTP body.
-  It will grow with every new chunk arrived, and
-  potentially can consume a lot of memory. An event handler may process
-  the body as chunks are coming, and signal Mongoose to delete processed
+  It will grow with every new chunk arrived and could 
+  potentially consume a lot of memory. An event handler may process
+  the body as chunks are coming in, and signal Mongoose to delete processed
   body by setting `MG_F_DELETE_CHUNK` in `mg_connection::flags`. When
   the last zero chunk is received,
-  Mongoose sends `MG_EV_HTTP_REPLY` event with
-  full reassembled body (if handler did not signal to delete chunks) or
-  with empty body (if handler did signal to delete chunks).
-- MG_EV_WEBSOCKET_HANDSHAKE_REQUEST: server has received websocket handshake
+  Mongoose sends an `MG_EV_HTTP_REPLY` event with
+  the full reassembled body (if handler did not signal to delete chunks) or
+  with the empty body (if handler did signal to delete chunks).
+- MG_EV_WEBSOCKET_HANDSHAKE_REQUEST: server has received WebSocket handshake
   request. `ev_data` contains parsed HTTP request.
-- MG_EV_WEBSOCKET_HANDSHAKE_DONE: server has completed Websocket handshake.
+- MG_EV_WEBSOCKET_HANDSHAKE_DONE: server has completed WebSocket handshake.
   `ev_data` is `NULL`.
-- MG_EV_WEBSOCKET_FRAME: new websocket frame has arrived. `ev_data` is
+- MG_EV_WEBSOCKET_FRAME: new WebSocket frame has arrived. `ev_data` is
   `struct websocket_message *`
-- MG_EV_HTTP_PART_BEGIN: new part of multipart message is started,
-  extra parameters are passed in mg_http_multipart_part
-- MG_EV_HTTP_PART_DATA: new portion of data from multiparted message
-  no additional headers are available, only data and data size
-- MG_EV_HTTP_PART_END: final boundary received, analogue to maybe used to
-  find the end of packet
+- MG_EV_HTTP_PART_BEGIN: new part of multipart message is started. 
+  Extra parameters are passed in mg_http_multipart_part
+- MG_EV_HTTP_PART_DATA: new portion of data from multiparted message has arrived.
+  No additional headers are available, only data and data size.
+- MG_EV_HTTP_PART_END: final boundary received. Marks the end of the multipart message. 
   Note: Mongoose should be compiled with MG_ENABLE_HTTP_STREAMING_MULTIPART
   to enable MG_EV_HTTP_MULTIPART_REQUEST, MG_EV_HTTP_REQUEST_END,
   MG_EV_HTTP_REQUEST_CANCEL, MG_EV_HTTP_PART_BEGIN, MG_EV_HTTP_PART_DATA,