put defaults into summary (dotnet#5097)

Author: gewarren

xml/System.Windows.Forms/TextFormatFlags.xml

@@ -170,16 +170,7 @@
       </ReturnValue>
       <MemberValue>0</MemberValue>
       <Docs>
-        <summary>Adds padding to the bounding rectangle to accommodate overhanging glyphs.</summary>
-        <remarks>
-          <format type="text/markdown"><![CDATA[
-
-## Remarks
-
-This is the default.
-
-          ]]></format>
-        </remarks>
+        <summary>Adds padding to the bounding rectangle to accommodate overhanging glyphs. This is the default.</summary>
       </Docs>
     </Member>
     <Member MemberName="HidePrefix">
@@ -267,16 +258,7 @@ This is the default.
       </ReturnValue>
       <MemberValue>0</MemberValue>
       <Docs>
-        <summary>Aligns the text on the left side of the clipping area.</summary>
-        <remarks>
-          <format type="text/markdown"><![CDATA[
-
-## Remarks
-
-This is the default.
-
-          ]]></format>
-        </remarks>
+        <summary>Aligns the text on the left side of the clipping area. This is the default.</summary>
       </Docs>
     </Member>
     <Member MemberName="LeftAndRightPadding">
@@ -612,16 +594,7 @@ This is the default.
       </ReturnValue>
       <MemberValue>0</MemberValue>
       <Docs>
-        <summary>Aligns the text on the top of the bounding rectangle.</summary>
-        <remarks>
-          <format type="text/markdown"><![CDATA[
-
-## Remarks
-
-This is the default.
-
-          ]]></format>
-        </remarks>
+        <summary>Aligns the text on the top of the bounding rectangle. This is the default.</summary>
       </Docs>
     </Member>
     <Member MemberName="VerticalCenter">