GUACAMOLE-249: Fix misspelled "instruction" and "have" in comments.

src/protocols/rdp/channels/pipe-svc.h

@@ -161,7 +161,7 @@ guac_user_blob_handler guac_rdp_pipe_svc_blob_handler;
  * Handler for "pipe" instructions which automatically prepares received pipe
  * streams to automatically write received blobs to the SVC having the same
  * name as the pipe stream. Received pipe streams are associated with the
- * relevant guac_rdp_pipe_svc instance and the SVC-specific "blob" instructino
+ * relevant guac_rdp_pipe_svc instance and the SVC-specific "blob" instruction
  * handler (guac_rdp_pipe_svc_blob_handler).
  */
 guac_user_pipe_handler guac_rdp_pipe_svc_pipe_handler;

src/protocols/rdp/upload.c

@@ -40,7 +40,7 @@
  *
  * @param path
  *     A pointer to a buffer which should receive the sanitized path. The
- *     buffer must hav at least GUAC_RDP_FS_MAX_PATH bytes available.
+ *     buffer must have at least GUAC_RDP_FS_MAX_PATH bytes available.
  */
 static void __generate_upload_path(const char* filename, char* path) {