There were minimal grammatical and spelling mistakes in the files which I
corrected as documentation proof reading.
Also added information about few ipsec vpn parameters.
BGP as number is no longer represented as a tag node on "protocols bgp <asn>"
but rather is not represented as leafNode under "protocols bgp local-as <asn>"
Adding documentation on the default RFC8212 behavior for FRR, and
how in VyOS we are changing that default. Also added information
on the toggle option to enable/disable said RFC8212 functionality.
This is a documentation addition for the allow range command
within BGP, as well as the associated limit command as well.
There was a few spelling mistakes that were fixed too, but
not anything big.
Co-authored-by: Cheeze_It <none@none.com>