Fixed user guide internal & external links to resolve problems reported by sphinx "make linkcheck"
Signed-off-by:Master Yoda <jim_parry@bcit.ca>
diff --git a/user_guide_src/source/helpers/string_helper.rst b/user_guide_src/source/helpers/string_helper.rst
index 9d0d890..a1acb21 100644
--- a/user_guide_src/source/helpers/string_helper.rst
+++ b/user_guide_src/source/helpers/string_helper.rst
@@ -124,7 +124,7 @@
 	:rtype:	string
 
 	Converts double slashes in a string to a single slash, except those
-	found in URL protocol prefixes (e.g. http://).
+	found in URL protocol prefixes (e.g. http&#58;//).
 
 	Example::