Revise tutorial description for 3-in-a-row Part 1 (#7540)

* Revise tutorial description for 3-in-a-row Part 1

Updated the description for the 3-in-a-row tutorial to be more engaging.

* add 'it' referring to game board

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Co-authored-by: Galen Nickel <gnickel@aquent.com>

Author: Jaqster

docs/skillmap/3-in-a-row.md

@@ -19,7 +19,7 @@
 
 * name: 3 in a Row - Part 1
 * type: tutorial
-* description: Set up the tilemap game board and dynamically fill with symbols.
+* description: Set up the game board and fill it with colored symbols!
 * url: /skillmap/3-in-a-row/3-in-a-row1
 * imageUrl: /static/skillmap/3-in-a-row/3-in-a-row1.gif
 * tags: puzzle, tilemap, intermediate
@@ -60,4 +60,4 @@
         * preview: /static/skillmap/certificates/3-in-a-row-cert.png
     * completion-badge:
         * image: /static/badges/badge-3-in-a-row.png
-        * name: 3 in a Row
+        * name: 3 in a Row