Merge branch 'main' into alex/sam/dec-type

* main:
  docs: amend docs for 52 changes  (#21992)
  test: migrate e2e/authz to system tests (#21819)
  refactor(runtime/v2): use StoreBuilder (#21989)
  feat(schema): add API descriptors, struct, oneof & list types, and wire encoding spec (#21482)
  docs: add instructions to change DefaultGenesis (#21680)
  feat(x/staking)!: Add metadata field to validator info (#21315)
  chore(x/authz)!: Remove account keeper dependency (#21632)
  chore(contributing): delete link (#21990)
  test(gov): Migrate e2e to system test (#21927)
  test: e2e/client to system tests (#21981)

CONTRIBUTING.md

@@ -200,7 +200,7 @@ that you would like early feedback and tagging whoever you would like to receive
 Codeowners are marked automatically as the reviewers.
 
 All PRs require at least two review approvals before they can be merged (one review might be acceptable in
-the case of minor changes to [docs](./.github/PULL_REQUEST_TEMPLATE/docs.md) changes that do not affect production code). Each PR template has a reviewers checklist that must be completed before the PR can be merged. Each reviewer is responsible
+the case of minor changes to docs changes that do not affect production code). Each PR template has a reviewers checklist that must be completed before the PR can be merged. Each reviewer is responsible
 for all checked items unless they have indicated otherwise by leaving their handle next to specific
 items. In addition, use the following review explanations: