Fix syntax error in tracking pixel

Author: MarkEWaite

README.adoc

@@ -7,7 +7,7 @@
 == Introduction
 
 image::images/jenkins-and-git.png[Jenkins and Git]
-image::https://static.scarf.sh/a.png?x-pxid=e011adc8-3614-41ef-b7e8-2f42328e8962&page=git-plugin-readme
+image::https://static.scarf.sh/a.png?x-pxid=e010adc8-3614-41ef-b7e8-2f42328e8962&page=git-plugin-readme[]
 
 The git plugin provides fundamental git operations for Jenkins projects.
 It can poll, fetch, checkout, branch, list, merge, tag, and push repositories.