chore(learn): Renamed all project-based curriculum project step filenames to use 3-digit format of part-ddd.md (#39463)

* fix: renamed basic html cat photo app steps

* fix: renamed css-variables project steps

* fix: renamed d3-dashboard filenames

* fix: renamed rpg-game filenames

* fix: renamed functional-progamming-spreadsheet filenames

* fix: renamed calorie-counter project filenames

curriculum/challenges/english/01-responsive-web-design/basic-html-cat-photo-app/part-001.md

@@ -1,6 +1,6 @@
 ---
 id: 5dc174fcf86c76b9248c6eb2
-title: Part 01
+title: Part 1
 challengeType: 0
 isHidden: true
 ---

curriculum/challenges/english/01-responsive-web-design/basic-html-cat-photo-app/part-002.md

@@ -1,6 +1,6 @@
 ---
 id: 5dc1798ff86c76b9248c6eb3
-title: Part 02
+title: Part 2
 challengeType: 0
 isHidden: true
 ---

curriculum/challenges/english/01-responsive-web-design/basic-html-cat-photo-app/part-003.md

@@ -1,6 +1,6 @@
 ---
 id: 5dc17d3bf86c76b9248c6eb4
-title: Part 03
+title: Part 3
 challengeType: 0
 isHidden: true
 ---

curriculum/challenges/english/01-responsive-web-design/basic-html-cat-photo-app/part-004.md

@@ -1,6 +1,6 @@
 ---
 id: 5dc17dc8f86c76b9248c6eb5
-title: Part 04
+title: Part 4
 challengeType: 0
 isHidden: true
 ---

curriculum/challenges/english/01-responsive-web-design/basic-html-cat-photo-app/part-005.md

@@ -1,6 +1,6 @@
 ---
 id: 5dc2385ff86c76b9248c6eb7
-title: Part 05
+title: Part 5
 challengeType: 0
 isHidden: true
 ---

curriculum/challenges/english/01-responsive-web-design/basic-html-cat-photo-app/part-006.md

@@ -1,6 +1,6 @@
 ---
 id: 5dc23991f86c76b9248c6eb8
-title: Part 06
+title: Part 6
 challengeType: 0
 isHidden: true
 ---

curriculum/challenges/english/01-responsive-web-design/basic-html-cat-photo-app/part-007.md

@@ -1,6 +1,6 @@
 ---
 id: 5dc23f9bf86c76b9248c6eba
-title: Part 07
+title: Part 7
 challengeType: 0
 isHidden: true
 ---

curriculum/challenges/english/01-responsive-web-design/basic-html-cat-photo-app/part-008.md

@@ -1,6 +1,6 @@
 ---
 id: 5dc24073f86c76b9248c6ebb
-title: Part 08
+title: Part 8
 challengeType: 0
 isHidden: true
 ---

curriculum/challenges/english/01-responsive-web-design/basic-html-cat-photo-app/part-009.md

@@ -1,6 +1,6 @@
 ---
 id: 5dc24165f86c76b9248c6ebc
-title: Part 09
+title: Part 9
 challengeType: 0
 isHidden: true
 ---