Fixed spelling of "Assured" in footer

6a · web-flow · commit f3957cf60bb5 · 2018-11-27T13:19:55.000+09:00
Assuerd --&gt; Assured

I know this is a large pull request so please take your time.
diff --git a/_includes/footer.md b/_includes/footer.md
@@ -1,5 +1,5 @@
-REST Assuerd is [open source]({{ site.source_link }})
+REST Assured is [open source]({{ site.source_link }})
 &mdash;
 Issue [tracker](https://github.com/rest-assured/rest-assured/issues)
 &mdash;
-Mailing [list](https://groups.google.com/forum/#!forum/rest-assured)
+Mailing [list](https://groups.google.com/forum/#!forum/rest-assured)
