A few more changes from code review

Author: Denis Levin

csharp/ql/src/Likely Bugs/LeapYear/UnsafeYearConstruction.qhelp

@@ -4,7 +4,7 @@
 <qhelp>
 <overview>
   <p>When creating a <code>System.DateTime</code> object by setting the year, month, and day in the constructor by performing an arithmetic operation on a different <code>DateTime</code> object, there is a risk that the date you are setting is invalid.</p>
-  <p>On a leap year, such code may throw an <code>ArgumentOutOfRangeException</code> with a message of <code>"Year, Month, and Day parameters describe an un-representable DateTime."</code></p>
+  <p>On a leap year, such code may throw an <code>ArgumentOutOfRangeException</code> with a message of <code>"Year, Month, and Day parameters describe an unrepresentable DateTime."</code></p>
 </overview>
 <recommendation>
   <p>Creating a <code>System.DateTime</code> object based on a different <code>System.DateTime</code> object, use the appropriate methods to manipulate the date instead of arithmetic.</p>

csharp/ql/src/Likely Bugs/LeapYear/UnsafeYearConstructionBad.cs

@@ -6,7 +6,7 @@ public UnsafeYearConstructionBad()
         DateTime Start;
         DateTime End;
         var now = DateTime.UtcNow;
-        // the base-date +/1 n years may not be a valid date.
+        // the base-date +/- n years may not be a valid date.
         Start = new DateTime(now.Year - 1, now.Month, now.Day, 0, 0, 0, DateTimeKind.Utc);
         End = new DateTime(now.Year + 1, now.Month, now.Day, 0, 0, 1, DateTimeKind.Utc);
     }

csharp/ql/src/Likely Bugs/LeapYear/UnsafeYearConstructionGood.cs

@@ -1,7 +1,7 @@
 using System;
-public class UnsafeYearConstructionBad
+public class UnsafeYearConstructionGood
 {
-    public UnsafeYearConstructionBad()
+    public UnsafeYearConstructionGood()
     {
         DateTime Start;
         DateTime End;