[464691] Fixes typo in message key of ancestor side

Bug: 464691
Change-Id: I6f38b06f2028184bea549717ad5a740b54ae8eff
Signed-off-by: Philip Langer <planger@eclipsesource.com>
diff --git a/plugins/org.eclipse.emf.compare.ide.ui/src/org/eclipse/emf/compare/ide/ui/internal/logical/ComparisonScopeBuilder.java b/plugins/org.eclipse.emf.compare.ide.ui/src/org/eclipse/emf/compare/ide/ui/internal/logical/ComparisonScopeBuilder.java
index 8da73a7..3a93ee0 100644
--- a/plugins/org.eclipse.emf.compare.ide.ui/src/org/eclipse/emf/compare/ide/ui/internal/logical/ComparisonScopeBuilder.java
+++ b/plugins/org.eclipse.emf.compare.ide.ui/src/org/eclipse/emf/compare/ide/ui/internal/logical/ComparisonScopeBuilder.java
@@ -558,7 +558,7 @@
 		} else if (side == DifferenceSource.RIGHT) {
 			sideStr = EMFCompareIDEUIMessages.getString("ComparisonScopeBuilder.right"); //$NON-NLS-1$
 		} else {
-			sideStr = EMFCompareIDEUIMessages.getString("ComparisonScopeBuilder.ancesotr"); //$NON-NLS-1$
+			sideStr = EMFCompareIDEUIMessages.getString("ComparisonScopeBuilder.ancestor"); //$NON-NLS-1$
 		}
 		BasicDiagnostic diagnostic = new BasicDiagnostic(
 				EMFCompareIDEUIPlugin.PLUGIN_ID,