Resolve "Improve security by enabling and enforcing more linting rules"

Description

See #242 (closed)

controller/nucleus/principalNetworkDomain.go

@@ -452,7 +452,7 @@ func (pnd *pndImplementation) RequestAll(path string) error {
 		}
 	}
 	// TODO: (maba): this is not returning any useful information; this should
-	// return some feedback if the requests were successfull
+	// return some feedback if the requests were successful
 	log.WithFields(log.Fields{
 		"pnd":  pnd.Id,
 		"path": path,