fix(tests): Update Calls test

Author: GeekMasher

ql/test/library-tests/calls/Calls.expected

@@ -1,4 +1,4 @@
-callable
+call
 | calls.bicep:1:32:1:63 | CallExpression |
 | calls.bicep:1:45:1:59 | CallExpression |
 | calls.bicep:4:111:4:121 | CallExpression |

ql/test/library-tests/calls/Calls.ql

@@ -1,5 +1,5 @@
 private import bicep
 
-query predicate callable(Callable callable) { any() }
+query predicate call(CallExpression callable) { any() }
 
 query predicate callArguments(CallExpression call, Expr argument) { call.getArguments() = argument }