go.text/language: the 'e' is kind of phonetically redundant, but I think

it is better to include it anyway.

R=r
CC=golang-codereviews
https://golang.org/cl/48230043

language/lookup.go

@@ -39,7 +39,7 @@ func cmp(a string, b []byte) int {
 	return 0
 }
 
-// search searchs for the insertion point of key in smap, which is a
+// search searches for the insertion point of key in smap, which is a
 // string with consecutive 4-byte entries. Only the first len(key)
 // bytes from the start of the 4-byte entries will be considered.
 func search(smap string, key []byte) int {