Sync docs after doc'ing "Rotate"

docs/ja_JP.UTF-8/README.txt

@@ -6,7 +6,7 @@
        Copyright © 2002-2024 by various contributors; AUTHORS.txt 参照.
                              https://tuxpaint.org/
 
-                                 2024年9月23日
+                                 2024年9月25日
 
 +--------------------------------------------------+
 |                       目次                       |
@@ -107,6 +107,9 @@ New Magic tool: Comic dots
     Draws a repeating dot pattern, simulating the "Ben Day process" used in
     early comic books.
 
+New Magic tool: Rotate
+    Rotates the drawing.
+
 New Magic tool: Fractal
     A set of tools that recursively repeat what you draw, scaling and/or
     rotating it as they repeat.

docs/ja_JP.UTF-8/html/README.html

@@ -102,7 +102,7 @@
           </p>
 
           <p>
-            2024年9月23日          </p>
+            2024年9月25日          </p>
         </center>
       </header>
       <table border="2"
@@ -237,6 +237,9 @@
   <dt>New Magic tool: Comic dots</dt>
   <dd>Draws a repeating dot pattern, simulating the "Ben Day process" used in early comic books.</dd>
 
+  <dt>New Magic tool: Rotate</dt>
+  <dd>Rotates the drawing.</dd>
+
   <dt>New Magic tool: Fractal</dt>
   <dd>A set of tools that recursively repeat what you draw, scaling and/or rotating it as they repeat.</dd>