Sync: Style, update, add more apps to SVG docs

docs/ja_JP.UTF-8/SVG.txt

@@ -7,9 +7,7 @@
 
                                    2022年1月20日
 
-     ----------------------------------------------------------------------
-
-About SVGs
+                                   About SVGs
 
    SVG (Scalable Vector Graphics) is an open standard used to describe
    two-dimensional vector graphics. It is great for diagrams and shapes,
@@ -19,16 +17,20 @@ About SVGs
 
    For more information, visit: https://www.w3.org/Graphics/SVG/
 
-How to make SVGs
+                                How to make SVGs
 
    An excellent tool with which to create SVG images for use in Tux Paint is
-   Inkscape, a high-quality Open Source interactive drawing program.
+   Inkscape, a high-quality Open Source interactive drawing program available
+   for Windows, macOS, and Linux. There are also other applications that can
+   produce SVGs, both free/open source, and commerical/proprietary.
 
-   It is likely that is already installed on your system. If not, it should
-   be readily available from your Linux distribution's software repository.
-   If not, or to learn more, visit http://www.inkscape.org/, respectively.
+   Open Source
+              * Inkscape — http://www.inkscape.org/
+              * Karbon — https://calligra.org/karbon/
 
-Mac and Windows users
-
-     * CorelDRAW (Corel) — http://www.corel.com/
-     * Illustrator (Adobe) — http://www.adobe.com/products/illustrator.html
+   Proprietary
+              * CorelDRAW (Corel) — https://www.coreldraw.com/en/
+              * Illustrator (Adobe) —
+                http://www.adobe.com/products/illustrator.html
+              * Boxy SVG — https://boxy-svg.com/
+              * Sketch (Sketch B.V.) — https://boxy-svg.com/