[rb] fix http proxy configuration for chrome (#13093)

[rb] fix http proxy configuration

Author: joromero

rb/lib/selenium/webdriver/common/selenium_manager.rb

@@ -67,7 +67,7 @@ def generate_command(binary, options)
           end
           if options.proxy
             command << '--proxy'
-            (command << options.proxy.ssl) || options.proxy.http
+            command << (options.proxy.ssl || options.proxy.http)
           end
           command
         end