docs: Update FireSim docs

[geekLucian]

Some docs about FireSim is a bit out-dated:

1. After source sourceme-manager.sh, we need firesim managerinit --platform f1 to do some extra prep work before continuing.
2. sims/firesim/deploy/deploy/config_build_recipes.ini doesn't exist, it was refactored into sims/firesim/deploy/config_build_recipes.yaml
3. Fix some broken links to FireSim docs

Also, I added a reference to FireSim docs on how to build custom hardware design with FireSim, should be beneficial to include that.

Related PRs / Issues:

Type of change:

• Bug fix
• New feature
• Other enhancement

Impact:

• RTL change
• Software change (RISC-V software)
• Build system change
• Other

Contributor Checklist:

• Did you set main as the base branch?
• Is this PR's title suitable for inclusion in the changelog and have you added a changelog:<topic> label?
• Did you state the type-of-change/impact?
• Did you delete any extraneous prints/debugging code?
• Did you mark the PR with a changelog: label?
• (If applicable) Did you update the conda .conda-lock.yml file if you updated the conda requirements file?
• (If applicable) Did you add documentation for the feature?
• (If applicable) Did you add a test demonstrating the PR?

• (If applicable) Did you mark the PR as Please Backport?

[jerryz123]

Re: 2).. that file should appear after managerinit has been executed. The user should not reference or modify sample_backup_configs. We could add a clarifying note on this though.

[geekLucian]

Re: 2).. that file should appear after managerinit has been executed. The user should not reference or modify sample_backup_configs. We could add a clarifying note on this though.

Yeah, I added manager-init in the previous setup commands already, so that file should appear by that stage

[geekLucian]

Re: 2).. that file should appear after managerinit has been executed. The user should not reference or modify sample_backup_configs. We could add a clarifying note on this though.

Oh that's a typo in the description, that's not what was there in the modification

[jerryz123]

@abejgonzalez