Revert "Update and rename Motr Design Document List from .rst to .md …

[rkothiya]

…format (#2090)"

This reverts commit 776ae92.

Problem Statement

Build failure: 1n/3n deployment failing with following error,
19:49:54 make distdir-am
19:49:54 make[4]: *** No rule to make target 'doc/motr-design-doc-list.rst', needed by 'distdir-am'. Stop.
19:49:54 make[3]: *** [Makefile:17713: distdir] Error 2
19:49:54 make[2]: *** [Makefile:17790: dist] Error 2
19:49:54 make[1]: *** [Makefile:20698: __rpm_pre] Error 2
19:49:54 make: *** [Makefile:20754: rpms] Error 2
[Pipeline] }`

Design

Reverting the change

Coding

Checklist for Author

• Coding conventions are followed and code is consistent

Testing

Checklist for Author

• Unit and System Tests are added
• Test Cases cover Happy Path, Non-Happy Path and Scalability
• Testing was performed with RPM

Impact Analysis

Checklist for Author/Reviewer/GateKeeper

• Interface change (if any) are documented
• Side effects on other features (deployment/upgrade)
• Dependencies on other component(s)

Review Checklist

Checklist for Author

• JIRA number/GitHub Issue added to PR
• PR is self reviewed
• Jira and state/status is updated and JIRA is updated with PR link
• Check if the description is clear and explained

Documentation

Checklist for Author

• Changes done to WIKI / Confluence page / Quick Start Guide

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View rendered doc/motr-design-doc-list.md