test naming improved marginally

Author: sbfaulkner

test/test_net_http_persistent.rb

@@ -280,7 +280,7 @@ def test_connection_for
     assert_same used, stored
   end
 
-  def test_connection_for_starvation
+  def test_connection_for_exhaustion
     @http = Net::HTTP::Persistent.new pool_size: 0
 
     assert_raises Timeout::Error do