As part of [min.io issue
#2136](https://github.com/miniohq/min.io/issues/2136), the crawler now
includes results from domains such as blog.min.io and resource.min.io.
By default, the search returns results from all these sources. This
update adds a filter to exclude results from domains other than
docs.min.io.
Also, added some minor CSS changes to fix the gray color palette
variables.
- Default Sphinx search page has been replaced with Algolia's
- Enabled routing to sync the search results with URL
**Preview:**
<img width="1458" alt="Screenshot 2022-12-30 at 14 47 28"
src="https://user-images.githubusercontent.com/13393018/210061993-c906461e-87e2-426f-b956-462cfa77ed40.png">
**How to test:**
1. Click on a search result, navigate back using the browser back button
and check whether the search result modal is open and available.
2. Type a search keyword and press the enter key to navigate to the
search results page, where you can find all the results listed.
Note: You might need to start the local web server on the exact build
sub-directory to test the point number 2.
`build/[branch]/[platform]/html/` - ✔️
`build/` - ❌
- Only the external links are set to open in new windows/tab
- Fixed incorrect web-font paths being called for preload.
- Minor CSS transition fixes.
- Conditionally called the search modal's keyboard events.
