all: deprecate write_str and replace it with write_string (#9369)

examples/websocket/client-server/client.v

@@ -4,7 +4,7 @@ import os
 import x.websocket
 import term
 
-// This client should be compiled an run in different konsoles 
+// This client should be compiled an run in different konsoles
 // it connects to the server who will broadcast your messages
 // to all other connected clients
 fn main() {
@@ -16,7 +16,7 @@ fn main() {
 		if line == '' {
 			break
 		}
-		ws.write_str(line) ?
+		ws.write_string(line) ?
 	}
 	ws.close(1000, 'normal') or { println(term.red('panicing $err')) }
 	unsafe {

examples/websocket/ping.v

@@ -75,7 +75,7 @@ fn write_echo(mut ws websocket.Client) ? {
 	message := 'echo this'
 	for i := 0; i <= 10; i++ {
 		// Server will send pings every 30 seconds
-		ws.write_str(message) or { println('panicing writing $err') }
+		ws.write_string(message) or { println('panicing writing $err') }
 		time.sleep(100 * time.millisecond)
 	}
 	ws.close(1000, 'normal') or { println('panicing $err') }