Add QLDoc

Author: carldybdahl-microsoft

csharp/ql/src/Bad Practices/PathCombine.ql

@@ -1,3 +1,13 @@
+/**
+ * @name Call to System.IO.Path.Combine
+ * @description Finds calls to System.IO.Path's Combine method
+ * @kind problem
+ * @problem.severity recommendation
+ * @precision very-high
+ * @id cs/path-combine
+ * @tags reliability
+ *       readability
+ */
 
 import csharp
 import semmle.code.csharp.frameworks.System