Update CI to index site when changes have MDX file

[devjsc]

So in CI I have commented the step of running node index-data-to-alogolia.js for now, as running this every-time we make a build will create a lots of repeated data in Algolia, so for that I will figure out a way in which, we will check if the commit contains any mdx file changes, then only index the changes of that committed file only, as rest of the changes already exists