docs(develop): use double quotes for pip

Some shells, notably Zsh, try parsing the brackets.

Fixes: #910

CONTRIBUTING.md

@@ -43,13 +43,13 @@ If you know what you're doing and have developed for Python projects in the past
 4.  If using a virtual environment instead of a dependency manager, install an editable version of the program and development dependencies with the following PIP command:
 
     ```
-    pip install -e .[dev]
+    pip install -e ".[dev]"
     ```
 
     Otherwise, modify the command above for use with your dependency manager of choice. For example if using uv, you may use this:
 
     ```
-    uv pip install -e .[dev]
+    uv pip install -e ".[dev]"
     ```
 
 ## Workflow Checks

docs/develop.md

@@ -41,7 +41,7 @@ To install the required dependencies, you can use a dependency manager such as [
 If using [uv](https://docs.astral.sh/uv), you can install the dependencies for TagStudio with the following command:
 
 ```sh
-uv pip install -e .[dev]
+uv pip install -e ".[dev]"
 ```
 
 A reference `.envrc` is provided for use with [direnv](#direnv), see [`contrib/.envrc-uv`](https://github.com/TagStudioDev/TagStudio/blob/main/contrib/.envrc-uv).
@@ -92,7 +92,7 @@ If you choose to manually set up a virtual environment and install dependencies
 3.  Use the following PIP command to create an editable installation and install the required development dependencies:
 
     ```sh
-    pip install -e .[dev]
+    pip install -e ".[dev]"
     ```
 
 ## Nix(OS)

docs/install.md

@@ -46,7 +46,7 @@ pip install .
 !!! note "Developer Dependencies"
     If you wish to create an editable install with the additional dependencies required for developing TagStudio, use this modified PIP command instead:
     ```sh
-    pip install -e .[dev]
+    pip install -e ".[dev]"
     ```
     _See more under "[Developing](./develop.md)"_