fix: add a space before 9 to align characters

Author: Acha0203

src/data/examples/en/05_Image/07_EdgeDetection.js

@@ -14,7 +14,7 @@
 // kernel is the 3x3 matrix of normalized values
 let kernel = [
   [-1, -1, -1],
-  [-1, 9, -1],
+  [-1,  9, -1],
   [-1, -1, -1]
 ];
 

src/data/examples/en/05_Image/09_Convolution.js

@@ -15,7 +15,7 @@ let w = 80;
 // filter; it accentuates the edges.
 const matrix = [
   [-1, -1, -1],
-  [-1, 9, -1],
+  [-1,  9, -1],
   [-1, -1, -1]
 ];