no-parameter-properties: fix unclear rule description (#4629)

src/rules/noParameterPropertiesRule.ts

@@ -29,7 +29,7 @@ export class Rule extends Lint.Rules.AbstractRule {
             Parameter properties can be confusing to those new to TS as they are less explicit
             than other ways of declaring and initializing class members.
 
-            It can be cleaner to keep member variable declarations in one list directly only the class
+            It can be cleaner to keep member variable declarations in one list directly above the class constructor
             (instead of mixed between direct class members and constructor parameter properties).
         `,
         optionsDescription: "Not configurable.",