correct spelling for 'paypal'

Author: vsopvsop

README.md

@@ -4,7 +4,7 @@
 [![NPM version](https://badge.fury.io/js/docpad-plugin-gitrestapi.png)](https://npmjs.org/package/docpad-plugin-gitrestapi "View this project on NPM")
 [![Gittip donate button](http://badgr.co/gittip/docpad.png)](https://www.gittip.com/docpad/ "Donate weekly to this project using Gittip")
 [![Flattr donate button](https://raw.github.com/balupton/flattr-buttons/master/badge-89x18.gif)](http://flattr.com/thing/344188/balupton-on-Flattr "Donate monthly to this project using Flattr")
-[![PayPayl donate button](https://www.paypalobjects.com/en_AU/i/btn/btn_donate_SM.gif)](https://www.paypal.com/au/cgi-bin/webscr?cmd=_flow&SESSION=IHj3DG3oy_N9A9ZDIUnPksOi59v0i-EWDTunfmDrmU38Tuohg_xQTx0xcjq&dispatch=5885d80a13c0db1f8e263663d3faee8d14f86393d55a810282b64afed84968ec "Donate once-off to this project using Paypal")
+[![PayPal donate button](https://www.paypalobjects.com/en_AU/i/btn/btn_donate_SM.gif)](https://www.paypal.com/au/cgi-bin/webscr?cmd=_flow&SESSION=IHj3DG3oy_N9A9ZDIUnPksOi59v0i-EWDTunfmDrmU38Tuohg_xQTx0xcjq&dispatch=5885d80a13c0db1f8e263663d3faee8d14f86393d55a810282b64afed84968ec "Donate once-off to this project using Paypal")
 
 
 ## Install