Merge pull request cds-hooks#649 from thiunuwan/patch-1

Patch 1 -Fixed Issue in building-blocks-cnb.md

Author: AidanDelaney

content/docs/buildpack-author-guide/create-buildpack/building-blocks-cnb.md

@@ -91,7 +91,7 @@ These two files are executable `detect` and `build` scripts. You are now able to
 
 ### Using your buildpack with `pack`
 
-In order to test your buildpack, you will need to run the buildpack against your sample Ruby app using the `pack` CLI.
+In order to test your buildpack, you will need to run the buildpack against your sample Node.js app using the `pack` CLI.
 
 Set your default [builder][builder] by running the following:
 
@@ -117,7 +117,7 @@ pack build test-node-js-app --path ./node-js-sample-app --buildpack ./node-js-bu
 ```
 <!--+- "{{execute}}"+-->
 
-The `pack build` command takes in your Ruby sample app as the `--path` argument and your buildpack as the `--buildpack` argument.
+The `pack build` command takes in your Node.js sample app as the `--path` argument and your buildpack as the `--buildpack` argument.
 
 After running the command, you should see that it failed to detect, as the `detect` script is currently written to simply error out.
 
@@ -137,4 +137,4 @@ ERROR: failed to detect: buildpack(s) failed with err
 <a href="/docs/buildpack-author-guide/create-buildpack/detection" class="button bg-pink">Next Step</a>
 
 [builder]: /docs/concepts/components/builder
-<!--+ end +-->
+<!--+ end +-->