docs: fix error bilibili url (#19375)

Thank you for contributing to LangChain!

bilibili-api-python use https://github.com/Nemo2011/bilibili-api repo.
Change to the correct address.

- [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, hwchase17.

docs/docs/integrations/document_loaders/bilibili.ipynb

@@ -9,7 +9,7 @@
     "\n",
     ">[Bilibili](https://www.bilibili.tv/) is one of the most beloved long-form video sites in China.\n",
     "\n",
-    "This loader utilizes the [bilibili-api](https://github.com/MoyuScript/bilibili-api) to fetch the text transcript from `Bilibili`.\n",
+    "This loader utilizes the [bilibili-api](https://github.com/Nemo2011/bilibili-api) to fetch the text transcript from `Bilibili`.\n",
     "\n",
     "With this BiliBiliLoader, users can easily obtain the transcript of their desired video content on the platform."
    ]
@@ -58,9 +58,6 @@
    "id": "3470dadf",
    "metadata": {
     "collapsed": false,
-    "jupyter": {
-     "outputs_hidden": false
-    },
     "pycharm": {
      "name": "#%%\n"
     }