Documentation: fix common spelling mistakes

This fixes several spelling mistakes in the Documentation/ tree, which
are caught by checkpatch.pl's spell checking.

Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Documentation/networking/can.txt

@@ -1256,7 +1256,7 @@ solution for a couple of reasons:
 7. SocketCAN resources
 -----------------------
 
-  The Linux CAN / SocketCAN project ressources (project site / mailing list)
+  The Linux CAN / SocketCAN project resources (project site / mailing list)
   are referenced in the MAINTAINERS file in the Linux source tree.
   Search for CAN NETWORK [LAYERS|DRIVERS].