Fix typo in cli error message (#74)

Author: frankfarzan

ts/create-kpt-functions/src/cmd/docker_push.ts

@@ -23,7 +23,7 @@ export function dockerPush(packageDir: string, dockerTag: string) {
   processDockerfile(packageDir, dockerTag, (dockerFile, functionName, image) => {
     const push = spawnSync('docker', ['push', image], { stdio: 'inherit' });
     if (push.status !== 0) {
-      let msg = 'Failed to build docker image';
+      let msg = 'Failed to push docker image';
       if (push.error) {
         msg = `${msg}: ${push.error}`;
       }

ts/create-kpt-functions/src/cmd/type_create.ts

@@ -71,7 +71,7 @@ export async function typeCreate(packageDir: string) {
   unlinkSync(swaggerFile);
 
   if (typegen.status !== 0) {
-    let msg = 'Failed to build docker image';
+    let msg = 'Failed to run typegen';
     if (typegen.error) {
       msg = `${msg}: ${typegen.error}`;
     }