Fix link for node modules sample (#762)

Author: ntotten

docs/programmable-api/node-modules.mdx

@@ -23,12 +23,8 @@ required to call an API.
 If you require a module that is not in this list, you can also bundle custom
 modules inside of your own project. This process does require some knowledge of
 node and npm, but it allows you to use any module or version of the module. To
-learn how to bundle your own modules, see the sample
-
-<a href="https://github.com/zuplo/zuplo/tree/main/examples/custom-module">
-  Custom Modules on GitHub
-</a>
-.
+learn how to bundle your own modules, see the
+[sample on Github](https://github.com/zuplo/zuplo/tree/main/examples/custom-module)
 
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