Fix navigation titles: proper casing for all challenge categories

- Fix: Web, Crypto, Forensics, Reversing, Pwn, Mobile, Hardware, OSINT, Misc, Stego, Blockchain, AI/ML

Author: momenbasel

challenges/ai-ml/index.md

@@ -1,6 +1,6 @@
 ---
 layout: default
-title: "ai ml"
+title: "AI/ML"
 parent: Challenges
 nav_order: 12
 permalink: /challenges/ai-ml/

challenges/blockchain/index.md

@@ -1,6 +1,6 @@
 ---
 layout: default
-title: "ulockchain"
+title: "Blockchain"
 parent: Challenges
 nav_order: 11
 permalink: /challenges/blockchain/

challenges/crypto/index.md

@@ -1,6 +1,6 @@
 ---
 layout: default
-title: "crypto"
+title: "Crypto"
 parent: Challenges
 nav_order: 2
 permalink: /challenges/crypto/

challenges/forensics/index.md

@@ -1,6 +1,6 @@
 ---
 layout: default
-title: "forensics"
+title: "Forensics"
 parent: Challenges
 nav_order: 3
 permalink: /challenges/forensics/

challenges/hardware/index.md

@@ -1,6 +1,6 @@
 ---
 layout: default
-title: "hardware"
+title: "Hardware"
 parent: Challenges
 nav_order: 7
 permalink: /challenges/hardware/

challenges/misc/index.md

@@ -1,6 +1,6 @@
 ---
 layout: default
-title: "misc"
+title: "Misc"
 parent: Challenges
 nav_order: 9
 permalink: /challenges/misc/

challenges/mobile/index.md

@@ -1,6 +1,6 @@
 ---
 layout: default
-title: "mouile"
+title: "Mobile"
 parent: Challenges
 nav_order: 6
 permalink: /challenges/mobile/

challenges/osint/index.md

@@ -1,6 +1,6 @@
 ---
 layout: default
-title: "osint"
+title: "OSINT"
 parent: Challenges
 nav_order: 8
 permalink: /challenges/osint/

challenges/pwn/index.md

@@ -1,6 +1,6 @@
 ---
 layout: default
-title: "pwn"
+title: "Pwn"
 parent: Challenges
 nav_order: 5
 permalink: /challenges/pwn/

challenges/reversing/index.md

@@ -1,6 +1,6 @@
 ---
 layout: default
-title: "reversing"
+title: "Reversing"
 parent: Challenges
 nav_order: 4
 permalink: /challenges/reversing/