crypto/cipher: fix typo from last change
crypto/cipher: fix typo from last change

s/encrypt/decrypt/

The text is unsafe to cut and paste...

Change-Id: Iab19ddf8182d087e9a4b4d34a9eeabd1d2aa02d6
Reviewed-on: https://go-review.googlesource.com/18104
Reviewed-by: Rob Pike <4dc7c9ec434ed06502767136789763ec11d2c4b7@golang.org>

akutz/go,mwhudson/go,ganboing/go-esx,akutz/go,cloudflare/go,linux-on-ibm-z/go,codestation/go,suncycheng/go,linux-on-ibm-z/go,Samurais/go,josharian/go,ImJasonH/go,derekmarcotte/go,codestation/go,sndnvaps/go,ImJasonH/go,vsekhar/elastic-go,vanloswang/go,CAFxX/go,vsekhar/elastic-go,Samurais/go,golang/go,Endika/go,codestation/go,ganboing/go-esx,polyverse-security/go,ganboing/go-esx,suncycheng/go,theif519/go,polyverse-security/go,theif519/go,vanloswang/go,polyverse-security/go,akutz/go,momchil-velikov/go,theif519/go,nawawi/go,mwhudson/go,Endika/go,linux-on-ibm-z/go,suncycheng/go,akutz/go,cloudflare/go,momchil-velikov/go,josharian/go,kim-racktop/go,nawawi/go,cyberroadie/go,golang/go,Endika/go,goodlang/good,Endika/go,Samurais/go,josharian/go,sndnvaps/go,cloudflare/go,cloudflare/go,mwhudson/go,vsekhar/elastic-go,ImJasonH/go,4ad/go,kim-racktop/go,mwhudson/go,derekmarcotte/go,codestation/go,cloudflare/go,Endika/go,codestation/go,mwhudson/go,Cofyc/go,vanloswang/go,4ad/go,cyberroadie/go,golang/go,suncycheng/go,mwhudson/go,sndnvaps/go,derekmarcotte/go,kim-racktop/go,josharian/go,ganboing/go-esx,binarycrusader/go,cyberroadie/go,kim-racktop/go,nawawi/go,derekmarcotte/go,linux-on-ibm-z/go,theif519/go,Cofyc/go,vanloswang/go,theif519/go,ganboing/go-esx,CAFxX/go,goodlang/good,suncycheng/go,golang/go,ganboing/go-esx,Endika/go,linux-on-ibm-z/go,vsekhar/elastic-go,nawawi/go,binarycrusader/go,nawawi/go,ImJasonH/go,polyverse-security/go,suncycheng/go,suncycheng/go,goodlang/good,Cofyc/go,Samurais/go,Cofyc/go,cloudflare/go,josharian/go,miolini/go,codestation/go,Samurais/go,cyberroadie/go,kim-racktop/go,momchil-velikov/go,polyverse-security/go,4ad/go,vanloswang/go,goodlang/good,josharian/go,ImJasonH/go,Samurais/go,polyverse-security/go,vanloswang/go,vsekhar/elastic-go,sndnvaps/go,CAFxX/go,Samurais/go,miolini/go,theif519/go,4ad/go,suncycheng/go,vanloswang/go,vsekhar/elastic-go,Cofyc/go,Cofyc/go,miolini/go,miolini/go,miolini/go,derekmarcotte/go,Endika/go,CAFxX/go,sndnvaps/go,momchil-velikov/go,cloudflare/go,polyverse-security/go,goodlang/good,nawawi/go,codestation/go,CAFxX/go,binarycrusader/go,cloudflare/go,cyberroadie/go,mwhudson/go,nawawi/go,kim-racktop/go,momchil-velikov/go,binarycrusader/go,linux-on-ibm-z/go,sndnvaps/go,goodlang/good,ImJasonH/go,goodlang/good,theif519/go,derekmarcotte/go,Samurais/go,sndnvaps/go,Cofyc/go,akutz/go,akutz/go,4ad/go,Cofyc/go,cyberroadie/go,miolini/go,4ad/go,binarycrusader/go,akutz/go,josharian/go,golang/go,ImJasonH/go,cyberroadie/go,momchil-velikov/go,linux-on-ibm-z/go,binarycrusader/go,sndnvaps/go,linux-on-ibm-z/go,cyberroadie/go,momchil-velikov/go,momchil-velikov/go,derekmarcotte/go,kim-racktop/go,derekmarcotte/go,golang/go,theif519/go,CAFxX/go,josharian/go,golang/go,vsekhar/elastic-go,kim-racktop/go,binarycrusader/go,golang/go,vanloswang/go,Endika/go,polyverse-security/go,codestation/go,CAFxX/go,4ad/go,CAFxX/go,4ad/go,goodlang/good,christopher-henderson/Go,mwhudson/go,miolini/go,ganboing/go-esx,ganboing/go-esx,ImJasonH/go,miolini/go,binarycrusader/go,akutz/go,vsekhar/elastic-go,nawawi/go