docs: Add Milvus Standalone to documentation (#29650)

- [x] **PR title**:


- [x] **PR message**:
- Added a new section for how to set up and use Milvus with Docker, and
added an example of how to instantiate Milvus for hybrid retrieval
- Fixed the documentation setup to run `make lint` and `make format`


- [x] **Add tests and docs**: If you're adding a new integration, please
include
N/A


- [x] **Lint and test**: Run `make format`, `make lint` and `make test`
from the root of the package(s) you've modified. See contribution
guidelines for more: https://python.langchain.com/docs/contributing/

Additional guidelines:
- Make sure optional dependencies are imported within a function.
- Please do not add dependencies to pyproject.toml files (even optional
ones) unless they are required for unit tests.
- Most PRs should not touch more than one package.
- Changes should be backwards compatible.
- If you are adding something to community, do not re-import it in
langchain.

If no one reviews your PR within a few days, please @-mention one of
baskaryan, efriis, eyurtsev, ccurme, vbarda, hwchase17.

---------

Co-authored-by: Mark Perfect <[email protected]>
Co-authored-by: Chester Curme <[email protected]>

docs/docs/contributing/how_to/documentation/setup.mdx

@@ -50,11 +50,6 @@ locally to ensure that it looks good and is free of errors.
 If you're unable to build it locally that's okay as well, as you will be able to
 see a preview of the documentation on the pull request page.
 
-From the **monorepo root**, run the following command to install the dependencies:
-
-```bash
-poetry install --with lint,docs --no-root
-````
 
 ### Building
 
@@ -158,14 +153,6 @@ the working directory to the `langchain-community` directory:
 cd [root]/libs/langchain-community
 ```
 
-Set up a virtual environment for the package if you haven't done so already.
-
-Install the dependencies for the package.
-
-```bash
-poetry install --with lint
-```
-
 Then you can run the following commands to lint and format the in-code documentation:
 
 ```bash