Improve links in developer's guide

[johnbent]

The developer's guide (https://github.com/Seagate/cortx-motr/blob/main/doc/motr-developer-guide.md) has three main sections:

1. A simple Cortx Motr application (object)
2. A simple Cortx Motr application (index)
3. More examples, utilities, and applications

Right at the bottom of the intro (right before the first section A simple Cortx Motr application (object)), we should add:
These document contains the following sections:

1. A simple Cortx Motr application (object)
2. A simple Cortx Motr application (index)
3. More examples, utilities, and applications
   And have these be (relevant) links to jump directly to those sections.

In the third section (More examples, utilities, and applications), there are a bunch of references to files (e.g. motr/st/utils/touch.c) which aren't links. These should be (relative) links to jump directly to the files.

FYI @huanghua78 and @andriytk and @VenkyOS

[VenkyOS]

@johnbent - I will work on this accordingly.

[stale]

This issue/pull request has been marked as needs attention as it has been left pending without new activity for 4 days. Tagging @huanghua78 @mukundkanekar for appropriate assignment. Sorry for the delay & Thank you for contributing to CORTX. We will get back to you as soon as possible.

[nkommuri]

@VenkyOS , Please close the ticket if the requested work is done. Thanks.

[johnbent]

@nkommuri , @VenkyOS is no longer at Seagate. These tickets can be reassigned to @swatid-seagate. FYI @novium258

[stale]

This issue/pull request has been marked as needs attention as it has been left pending without new activity for 4 days. Tagging @nkommuri @mehjoshi @huanghua78 for appropriate assignment. Sorry for the delay & Thank you for contributing to CORTX. We will get back to you as soon as possible.

[stale]

This issue/pull request has been marked as needs attention as it has been left pending without new activity for 4 days. Tagging @nkommuri @mehjoshi @huanghua78 for appropriate assignment. Sorry for the delay & Thank you for contributing to CORTX. We will get back to you as soon as possible.

[cortx-admin]

Chandradhar Raval commented in Jira Server:

Assigning to [~936118] based on above comments from John B

[cortx-admin]

Pratik Patil commented in Jira Server:

Added links to sections in document

[cortx-admin]

Pratik Patil commented in Jira Server:

Improved developers guide by adding easy navigation links

[cortx-admin]

Pratik Patil commented in Jira Server:

Fixed

[cortx-admin]

Gaurav Chaudhari commented in Jira Server:

{panel:bgColor=#c1c7d0}h2. motr - main branch build pipeline SUCCESS
h3. Build Info:

• Author: 80801716+Garuda5611

• Component Build : 5357

• Release Build : 6025

  h3. Artifact Location :

• http://cortx-storage.colo.seagate.com/releases/cortx/github/main/rockylinux-8.4/6025

h3. Image Location :

• cortx-docker.colo.seagate.com/seagate/cortx-all:2.0.0-6025
  cortx-docker.colo.seagate.com/seagate/cortx-rgw:2.0.0-6025
  cortx-docker.colo.seagate.com/seagate/cortx-data:2.0.0-6025
  cortx-docker.colo.seagate.com/seagate/cortx-control:2.0.0-6025
  {panel}