typo fixes

Most of these fixes were already submitted for old kernel versions, and were
approved, but for some reason they never made it into the releases.

Because this is a consolidation of a couple old missed patches, it touches both
Kconfigs and documentation texts.

Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Adrian Bunk <bunk@kernel.org>
diff --git a/net/ipv4/Kconfig b/net/ipv4/Kconfig
index d894f61..9f9fd2c 100644
--- a/net/ipv4/Kconfig
+++ b/net/ipv4/Kconfig
@@ -560,7 +560,7 @@
 	depends on EXPERIMENTAL
 	default n
 	---help---
-	TCP-Illinois is a sender-side modificatio of TCP Reno for
+	TCP-Illinois is a sender-side modification of TCP Reno for
 	high speed long delay links. It uses round-trip-time to
 	adjust the alpha and beta parameters to achieve a higher average
 	throughput and maintain fairness.