Sync docs from master to gh-pages

spring-cloud-contract.html

@@ -6797,9 +6797,9 @@ or just set the <code>ignored</code> property on the contract itself:</p>
 				// `name` and `content`. You can also call `named("fileName", "fileContent")`
 				file: named(
 						// name of the file
-						name: $(c(regex('.+')), p('filename.csv')),
+						name: $(c(regex(nonEmpty())), p('filename.csv')),
 						// content of the file
-						content: $(c(regex('.+')), p('file content')))
+						content: $(c(regex(nonEmpty())), p('file content')))
 		)
 	}
 	response {