doc: use consistent capitalization

backend/hubic/hubic.go

@@ -39,7 +39,7 @@ var (
 	// Description of how to auth for this app
 	oauthConfig = &oauth2.Config{
 		Scopes: []string{
-			"credentials.r", // Read Openstack credentials
+			"credentials.r", // Read OpenStack credentials
 		},
 		Endpoint: oauth2.Endpoint{
 			AuthURL:  "https://api.hubic.com/oauth/auth/",
@@ -76,8 +76,8 @@ func init() {
 // credentials is the JSON returned from the Hubic API to read the
 // OpenStack credentials
 type credentials struct {
-	Token    string `json:"token"`    // Openstack token
-	Endpoint string `json:"endpoint"` // Openstack endpoint
+	Token    string `json:"token"`    // OpenStack token
+	Endpoint string `json:"endpoint"` // OpenStack endpoint
 	Expires  string `json:"expires"`  // Expires date - eg "2015-11-09T14:24:56+01:00"
 }