Fix more URLs.

# Conflicts:
#	docs/src/main/asciidoc/verifier_setup.adoc

tests/samples-messaging-integration/src/main/resources/integration-context.xml

@@ -21,7 +21,7 @@
 			 xsi:schemaLocation="http://www.springframework.org/schema/beans
 			https://www.springframework.org/schema/beans/spring-beans.xsd
 			http://www.springframework.org/schema/integration
-			https://www.springframework.org/schema/integration/spring-integration.xsd">
+			http://www.springframework.org/schema/integration/spring-integration.xsd">
 
 	<channel id="input"/>
 	<channel id="delete"/>