Update manual-installation.adoc

fixed the version number to be 3.2.0

Author: Jeff McCormick

hugo/content/installation/manual-installation.adoc

@@ -20,7 +20,7 @@ export CO_CMD=kubectl
 export COROOT=$GOPATH/src/github.com/crunchydata/postgres-operator
 export CO_IMAGE_PREFIX=crunchydata
 export CO_BASEOS=centos7
-export CO_VERSION=3.2
+export CO_VERSION=3.2.0
 export CO_IMAGE_TAG=centos7-$CO_VERSION
 export PGO_CA_CERT=$COROOT/conf/apiserver/server.crt
 export PGO_CLIENT_CERT=$COROOT/conf/apiserver/server.crt