docs: fix repo URL and add projects/ to directory diagrams

- standalone-installation: correct GitHub org from aclark4life to mongodb-labs
- overview: add projects/ directory with shared venv to the structure diagram

Author: aclark4life

docs/design/standalone-installation.rst

@@ -28,7 +28,7 @@ New Approach
 .. code-block:: bash
 
    # Install globally using pipx
-   pipx install git+https://github.com/aclark4life/dbx-python-cli.git
+   pipx install git+https://github.com/mongodb-labs/dbx-python-cli.git
 
    # Use from anywhere
    cd ~/Developer/mongodb/
@@ -155,7 +155,7 @@ Users migrating from ``django-mongodb-cli`` should:
 
    .. code-block:: bash
 
-      pipx install git+https://github.com/aclark4life/dbx-python-cli.git
+      pipx install git+https://github.com/mongodb-labs/dbx-python-cli.git
 
 2. Initialize configuration:
 

docs/introduction/overview.rst

@@ -167,6 +167,10 @@ Typical directory structure after setup:
 .. code-block:: text
 
    ~/Developer/mongodb/              # base_dir
+   ├── projects/                     # Django projects
+   │   ├── .venv/                    # Shared venv for all projects
+   │   ├── myproject/               # Created with dbx project add
+   │   └── another_project/
    ├── pymongo/                      # Group directory
    │   ├── .venv/                    # Group-level virtual environment
    │   ├── mongo-python-driver/     # Cloned from global group