Fix wrong .NET string summary

Author: MarcMil

soot-infoflow-summaries/summariesManual/System.String.xml

@@ -25,7 +25,7 @@
 				</flow>
 			</flows>
 		</method>
-		<method id="void CopyTo(int,char[],int,int)>">
+		<method id="void CopyTo(int,char[],int,int)">
 			<flows>
 				<flow isAlias="false" typeChecking="false">
 					<from sourceSinkType="Field" />