explain import bindings case in code comment

Author: walaszczykm

lib/rules/no-unnecessary-waiting.js

@@ -70,8 +70,9 @@ function isIdentifierNumberConstArgument (node, scope) {
     return typeof definition.node.init.value === 'number'
   }
 
-  // import { WAIT_TIME } from './constants'
-  // cy.wait(WAIT_TIME)
+  // import { WAIT } from './constants'
+  // cy.wait(WAIT)
+  // we don't know if WAIT is a number or alias '@someRequest', so don't fail
   if (isImportBinding) {
     return false
   }