Sync docs to get Stamps rotation info

docs/fr_FR.UTF-8/README.txt

@@ -315,8 +315,28 @@ Outils disponibles
            ou photographiques (comme l'image d'un cheval, d'un arbre ou de la
            lune) dans votre dessin.
 
-           Lorsque vous déplacez la souris sur le canevas, une forme suit la
-           souris, indiquant où le tampon sera placé, ainsi que sa taille.
+           As you move the mouse around the canvas, an outline follows the
+           mouse, showing where the stamp will be placed, and how big it will
+           be. Click on the canvas where you wish to place the stamp.
+
+                Normal Stamps Mode
+
+                        Now you can move the mouse around the canvas to
+                        rotate the stamp.
+
+                        Click the mouse button again and the stamp will be
+                        added to the drawing.
+
+                Simple Stamps Mode
+                        If "stamp rotation" option is disabled, the stamp
+                        will be drawn on the canvas when you let go of the
+                        mouse button. (There's no rotation step.)
+
+                        ⚙ See the "Options" documentation to learn about the
+                        "stamp rotation" ("stamprotation") option.
+
+           📜 Note: The stamp rotation feature was added to Tux Paint in
+           version 0.9.29.
 
            Il peut y avoir de nombreuses catégories de timbres (par ex.
            animaux, plantes, espace extra-atmosphérique, véhicules,