MINOR: fix typos in the examples files
To be more specific the error 500 example page and the
transparent_proxy.cfg page. For the later, it is all in the comments but
still user-visible as those are examples.
diff --git a/examples/errorfiles/500.http b/examples/errorfiles/500.http
index ebf7d47..9c3be96 100644
--- a/examples/errorfiles/500.http
+++ b/examples/errorfiles/500.http
@@ -4,6 +4,6 @@
Content-Type: text/html
<html><body><h1>500 Internal Server Error</h1>
-An internal server error occured.
+An internal server error occurred.
</body></html>