Removing line break before <![CDATA[ (dotnet#5402)

Author: JasonCard

xml/System/Enum.xml

@@ -1119,8 +1119,7 @@
         <returns>
           <see langword="true" /> if the bit field or bit fields that are set in <paramref name="flag" /> are also set in the current instance; otherwise, <see langword="false" />.</returns>
         <remarks>
-          <format type="text/markdown">
-  <![CDATA[  
+          <format type="text/markdown"><![CDATA[  
   
 ## Remarks  
  The <xref:System.Enum.HasFlag%2A> method returns the result of the following Boolean expression.