Fix typo "coments" -> "comments"

Change-Id: I516f726cacff62c3d837f5b6ee55e804d5091efc
Reviewed-on: https://fuchsia-review.googlesource.com/c/fidlbolt/+/562886
Reviewed-by: Misha Gridnev <gridman@google.com>
diff --git a/frontend/src/mode.ts b/frontend/src/mode.ts
index ac207f4..6a7de1f 100644
--- a/frontend/src/mode.ts
+++ b/frontend/src/mode.ts
@@ -37,7 +37,7 @@
   bytes: `\
 // Type your bytes here!
 
-00 01 ff FF a0b1 c2d3 // coments are ignored
+00 01 ff FF a0b1 c2d3 // comments are ignored
 8badf00d DEAD BEEF    // group bytes together
 [0, 1, 2, 3, 4, 255]  // or list them in decimal
 "Hello, World!\\n" 00  // strings work too