Joyce Siqueira

Updates the contribution docs to the latest version of the labels

hi, non-dev here :) attaching the logos for the coretime chain, please add it to Kusama and also update the AH one   thanks upfront! :)

warn users about upcoming changes to the nomination pool

1

please add a banner (or something like that) that links to [this](https://support.polkadot.network/support/solutions/articles/65000188140-changes-for-nomination-pool-members-and-opengov-participation) article, so that users are warned and can prepare themselves for the changes