Update shaderblow.adoc

Fix broken links.

src/docs/asciidoc/sdk/plugin/shaderblow.adoc

@@ -757,6 +757,7 @@ Features:
 [cols="1",caption=]
 .YouTube
 |===
+
 a|.GLSL Texture Bomb 
 image:sdk/plugin/3lBhu2c5V8o.jpg[youtube_3lBhu2c5V8o,width="",height="",link"https://youtu.be/3lBhu2c5V8o"]