feat: add documentationURL to devcontainer features

Add documentation URLs pointing to GitHub repository for atlas,
postgresql-client, and starship features to improve discoverability and
provide users with easy access to feature documentation.

Signed-off-by: Svetlin Ralchev <[email protected]>

Author: iamralch

src/atlas/devcontainer-feature.json

@@ -3,6 +3,7 @@
   "name": "Atlas",
   "version": "0.0.1",
   "description": "Manage your database schema as code.",
+  "documentationURL": "https://github.com/devcontainers-features/collection/tree/main/src/atlas",
   "options": {
     "version": {
       "description": "Select the version to install.",

src/postgresql-client/devcontainer-feature.json

@@ -3,6 +3,7 @@
   "name": "PostgreSQL Client",
   "version": "0.0.1",
   "description": "PostgreSQL Client is the PostgreSQL interactive terminal.",
+  "documentationURL": "https://github.com/devcontainers-features/collection/tree/main/src/postgresql-client",
   "options": {},
   "installsAfter": [
     "ghcr.io/devcontainers/features/common-utils"

src/starship/devcontainer-feature.json

@@ -3,6 +3,7 @@
     "name": "Starship Prompt",
     "version": "0.0.1",
     "description": "Starship is fast and highly customizable cross-shell prompt that can display contextual information.",
+    "documentationURL": "https://github.com/devcontainers-features/collection/tree/main/src/starship",
     "options": {
         "version": {
             "description": "Select the version to install.",