Fix various typos and grammatical errors (#141)

These were found by a combination of manual review and a custom script
that checks for common errors.

Also removed an outdated sentence from the comment for setupBefore().

1 files changed, 1 insertions, 1 deletions

diff --git a/crypto/rand.go b/crypto/rand.go
index 0778ebd..736d969 100644
--- a/crypto/rand.go
+++ b/crypto/rand.go
@@ -44,7 +44,7 @@ func NewRandomBuffer(length int) ([]byte, error) {
 }
 
 // NewRandomKey creates a random key of the specified length. This function uses
-// the same random number generation process a NewRandomBuffer.
+// the same random number generation process as NewRandomBuffer.
 func NewRandomKey(length int) (*Key, error) {
 	return NewFixedLengthKeyFromReader(randReader{}, length)
 }