src,stream: improve WriteString

Update comment

src/stream_base.h

@@ -244,7 +244,7 @@ class StreamResource {
   // `*bufs` and `*count` accordingly. This is a no-op by default.
   // Return 0 for success and a libuv error code for failures.
   virtual int DoTryWrite(uv_buf_t** bufs, size_t* count);
-  // Indicates whether this subclass override the DoTryWrite
+  // Indicates whether this subclass overrides the DoTryWrite
   virtual inline bool HasDoTryWrite() const { return false; }
   // Initiate a write of data.
   // Upon an immediate failure, a libuv error code is returned,