Fix typos

Found via `codespell -q 3 -S ./deps -L fo,numer,te,uint,wille`

(cherry picked from commit 7105ff2dfd)

src/wl_window.c

@@ -134,7 +134,7 @@ static int createTmpfileCloexec(char* tmpname)
  * SCM_RIGHTS methods.
  *
  * posix_fallocate() is used to guarantee that disk space is available
- * for the file at the given size. If disk space is insufficent, errno
+ * for the file at the given size. If disk space is insufficient, errno
  * is set to ENOSPC. If posix_fallocate() is not supported, program may
  * receive SIGBUS on accessing mmap()'ed file contents instead.
  */