CLEANUP: assorted typo fixes in the code and comments

This is 10th iteration of typo fixes
diff --git a/examples/wurfl-example.cfg b/examples/wurfl-example.cfg
index e5aa01d..52df68e 100644
--- a/examples/wurfl-example.cfg
+++ b/examples/wurfl-example.cfg
@@ -31,7 +31,7 @@
 	bind			192.168.1.22:80
 	default_backend		TheBackend
 
-	# inject a header called X-Wurfl-All with all the WURFL informations listed in wurfl-information-list
+	# inject a header called X-Wurfl-All with all the WURFL information listed in wurfl-information-list
 	http-request set-header X-Wurfl-All %[wurfl-get-all()]
 
 	# inject a header called X-WURFL-PROPERTIES with the "wurfl_id" information (should be listed in wurfl-information-list)