doc: fix misleading sentence in http.md

Calling `response.end(data)` is not 100% equivalent to calling
`response.write(data)` followed by `response.end()`.

Fixes: nodejs#26005

doc/api/http.md

@@ -1146,7 +1146,7 @@ This method signals to the server that all of the response headers and body
 have been sent; that server should consider this message complete.
 The method, `response.end()`, MUST be called on each response.
 
-If `data` is specified, it is equivalent to calling
+If `data` is specified, it is similar in effect to calling
 [`response.write(data, encoding)`][] followed by `response.end(callback)`.
 
 If `callback` is specified, it will be called when the response stream