Fix misc .c/.h comment typos

Fix various .c/.h typos in comments (no code changes).

Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
diff --git a/net/wanrouter/wanmain.c b/net/wanrouter/wanmain.c
index 9479659..316211d 100644
--- a/net/wanrouter/wanmain.c
+++ b/net/wanrouter/wanmain.c
@@ -3,7 +3,7 @@
 *
 *		This module is completely hardware-independent and provides
 *		the following common services for the WAN Link Drivers:
-*		 o WAN device managenment (registering, unregistering)
+*		 o WAN device management (registering, unregistering)
 *		 o Network interface management
 *		 o Physical connection management (dial-up, incoming calls)
 *		 o Logical connection management (switched virtual circuits)