Fix documentation URLs and simplify README titles (#14)

Author: shokkunrf

features/src/bun/README.md

@@ -1,4 +1,4 @@
-# Bun (bun)
+# bun
 
 Installs [Bun](https://bun.com/) JavaScript runtime via the official installer.
 

features/src/bun/devcontainer-feature.json

@@ -2,7 +2,7 @@
   "id": "bun",
   "version": "1.0.0",
   "name": "Bun",
-  "documentationURL": "https://github.com/shokkunrf/devcontainer/tree/develop/features/src/bun/README.md",
+  "documentationURL": "https://github.com/shokkunrf/devcontainer/blob/develop/features/src/bun/README.md",
   "description": "Installs Bun JavaScript runtime via the official installer",
   "options": {},
   "installsAfter": ["ghcr.io/devcontainers/features/common-utils"]

features/src/claude-code/README.md

@@ -1,4 +1,4 @@
-# Claude Code (claude-code)
+# claude-code
 
 Installs [Claude Code](https://docs.anthropic.com/en/docs/claude-code/overview) CLI via the official installer.
 

features/src/claude-code/devcontainer-feature.json

@@ -2,7 +2,7 @@
   "id": "claude-code",
   "version": "1.1.3",
   "name": "Claude Code",
-  "documentationURL": "https://github.com/shokkunrf/develop/tree/main/features/src/claude-code",
+  "documentationURL": "https://github.com/shokkunrf/devcontainer/blob/develop/features/src/claude-code/README.md",
   "description": "Installs Claude Code CLI via the official installer",
   "options": {},
   "installsAfter": ["ghcr.io/devcontainers/features/common-utils"]

features/src/node-packages/devcontainer-feature.json

@@ -2,7 +2,7 @@
   "id": "node-packages",
   "version": "1.0.1",
   "name": "Node Packages",
-  "documentationURL": "https://github.com/shokkunrf/develop/tree/main/features/src/node-packages",
+  "documentationURL": "https://github.com/shokkunrf/devcontainer/blob/develop/features/src/node-packages/README.md",
   "description": "Installs specified npm packages globally",
   "options": {
     "packages": {