Added links to Rive documentation

docs/en/en.json

@@ -602,6 +602,10 @@
                         "path": "/manuals/property-animation",
                         "name": "Property animation (tweens)"
                     },
+                    {
+                        "path": "/extension-rive",
+                        "name": "Rive animation"
+                    },
                     {
                         "path": "/manuals/spine",
                         "name": "Spine animation"
@@ -651,6 +655,10 @@
                         "path": "/manuals/particlefx",
                         "name": "Particle FX"
                     },
+                    {
+                        "path": "/extension-rive",
+                        "name": "Rive"
+                    },
                     {
                         "path": "/manuals/sound",
                         "name": "Sound"

docs/en/manuals/sprite.md

@@ -3,7 +3,7 @@ title: Showing 2D images
 brief: This manual describes how to show 2D images and animations using the sprite component.
 ---
 
-#  Sprites
+# Sprites
 
 A Sprite component is a simple image or flipbook animation that is displayed on screen.