Fix typos across codebase

Howorequested to merge
fix/typos into develop
  • Fix 'occured' → 'occurred' in 19+ locations (error messages)
  • Fix 'recieve' → 'receive' in broadcast_ops.yml
  • Fix 'disllows' → 'disallows' in broadcast_ops.yml
  • Fix 'wich' → 'which' in reblogging_post.md
  • Fix 'usefull' → 'useful' in grant_active_permission.md
  • Fix 'authentification' → 'authentication' in hivesigner.md (2 instances)
  • Fix 'transfered' → 'transferred' in broadcast_ops.yml
  • Fix 'unkept' → 'remaining' and 'key' → 'keep' in 4 locations

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