small fix on terminology

Author: angrykoala

CONTRIBUTING.md

@@ -72,16 +72,16 @@ The Aura CLI aims to provide a consistent and reliable experience to the end use
     -   ✅ `aura-cli instance list`
     -   ❌ `aura-cli list-instance`
     -   ❌ `aura-cli list instance`
--   Only one parameter should be used, if more than one is needed, use flags instead. This is to avoid confusion when passing parameters without enough context
+-   Only one argument should be used, if more than one is needed, use flags instead. This is to avoid confusion when passing parameters without enough context
     -   ✅ `aura-cli instance get <id>`
     -   ❌ `aura-cli instance get <id> <deployment-id>`
     -   ✅ `aura-cli instance get <id> --deployment-id <deployment-id>`
     -   ⚠️ `aura-cli instance get --instance-id <id> --deployment-id <deployment-id>`  
         This valid, but the option above is preferred as it is more concise
--   The parameter must always refer to the closest noun
+-   The argument must always refer to the closest noun
     -   ❌ `aura-cli instance snapshot list <instance-id>`
     -   ✅ `aura-cli instance snapshot list --instance-id <instance-id>`
--   No parameters between commands
+-   No arguments between commands
     -   ❌ `aura-cli tenant <tenant-id> instance get <id>`
     -   ✅ `aura-cli instance get <id> --tenant-id <tenant-id>`
 -   Flags, if set, take precedence over global configuration or default values