Clarify docs for Expectation#with params

The `expected_parameters_or_matchers` argument in the actual method
signature is already splatted and so it makes more sense that the
`param` YARD tag type does not use a splat.

lib/mocha/expectation.rb

@@ -202,7 +202,7 @@ def at_most_once
     # @see ParameterMatchers
     # @see Configuration#strict_keyword_argument_matching=
     #
-    # @param [*Array<Object,ParameterMatchers::Base>] expected_parameters_or_matchers expected parameter values or parameter matchers.
+    # @param [Array<Object,ParameterMatchers::Base>] expected_parameters_or_matchers expected parameter values or parameter matchers.
     # @yield optional block specifying custom matching.
     # @yieldparam [*Array<Object>] actual_parameters parameters with which expected method was invoked.
     # @yieldreturn [Boolean] +true+ if +actual_parameters+ are acceptable.