Fix blockquote rendering

ansi/renderer.go

@@ -129,10 +129,14 @@ func (r *ANSIRenderer) renderNode(w util.BufWriter, source []byte, node ast.Node
 }
 
 func isChild(node ast.Node) bool {
+	if node.Parent() != nil && node.Parent().Kind() == ast.KindBlockquote {
+		// skip paragraph within blockquote to avoid reflowing text
+		return true
+	}
 	for n := node.Parent(); n != nil; n = n.Parent() {
 		// These types are already rendered by their parent
 		switch n.Kind() {
-		case ast.KindLink, ast.KindImage, ast.KindEmphasis, astext.KindStrikethrough, ast.KindBlockquote, astext.KindTableCell:
+		case ast.KindLink, ast.KindImage, ast.KindEmphasis, astext.KindStrikethrough, astext.KindTableCell:
 			return true
 		}
 	}