Update CLI docs for mainnet acp 77 (#1990)

* update mainnet acp 77

* Update content/docs/avalanche-l1s/deploy-a-avalanche-l1/avalanche-mainnet.mdx

Co-authored-by: Meaghan FitzGerald <meag.fitz@avalabs.org>
Signed-off-by: sukantoraymond <rsukanto@umich.edu>

* Update content/docs/avalanche-l1s/deploy-a-avalanche-l1/avalanche-mainnet.mdx

Co-authored-by: Meaghan FitzGerald <meag.fitz@avalabs.org>
Signed-off-by: sukantoraymond <rsukanto@umich.edu>

* address comments

---------

Signed-off-by: sukantoraymond <rsukanto@umich.edu>
Co-authored-by: Meaghan FitzGerald <meag.fitz@avalabs.org>