x/vgo: remove trailing whitespace, fix typo

Change-Id: I9f9efb45273e38ab9daafe824299f52acc532a43
Reviewed-on: https://go-review.googlesource.com/105046
Reviewed-by: Russ Cox <rsc@golang.org>

vendor/cmd/go/internal/vgo/get.go

diff --git a/vendor/cmd/go/internal/vgo/get.go b/vendor/cmd/go/internal/vgo/get.go
index 0941ec5..89bcd7d 100644
--- a/vendor/cmd/go/internal/vgo/get.go
+++ b/vendor/cmd/go/internal/vgo/get.go
@@ -26,7 +26,7 @@
 
 The -u flag causes get to download the latest version of dependencies as well.
 
-Each package being updated can be suffixed with @version to specifiy 
+Each package being updated can be suffixed with @version to specify
 the desired version. Specifying a version older than the one currently
 in use causes a downgrade, which may in turn downgrade other
 modules using that one, to keep everything consistent.