Fix typos (#2531)

Found via `codespell -S *.ipynb,CHANGELOG.md`

Author: kianmeng

docs/scripts/homepage_miniatures.py

@@ -1,7 +1,7 @@
 """Script to generate the miniatures used for the website homepage grid.
 
 Due to the html structure of the page, the 6 figures below should aim for a 2/1 ratio.
-Their width should be roughtly twice their height.
+Their width should be roughly twice their height.
 """
 
 from pathlib import Path

docs/source/contributing/how_to_release.md

@@ -33,7 +33,7 @@ ArviZ uses the following process to cut a new release of the ArviZverse packages
 
    :::{important}
    There is a bot that opens a PR automatically to update the conda forge recipe.
-   There is a second bot that also attempts to update dependecies automatically from `pyproject.toml`,
+   There is a second bot that also attempts to update dependencies automatically from `pyproject.toml`,
    however, at the time of writing it is experimental, so we always need to double check dependencies.
    :::
 

docs/source/contributing/issue_reports.md

@@ -5,7 +5,7 @@ We appreciate being notified of problems with the existing ArviZ code.
 We prefer that issues be shared on a Github Issue Tracker rather than on social media or by direct email to the developers.
 If you are unsure if your issue corresponds to a specific package of the ArviZverse,
 you can open an issue in the [main ArviZ repository issue tracker](https://github.com/arviz-devs/arviz/issues).
-On the other hand, if you are certain the issue corresponds to a specific pacakge, use the relevant issue tracker: of the corresponding package repository:
+On the other hand, if you are certain the issue corresponds to a specific package, use the relevant issue tracker: of the corresponding package repository:
 
 * [ArviZ-base](https://github.com/arviz-devs/arviz-base/issues)
 * [ArviZ-stats](https://github.com/arviz-devs/arviz-stats/issues)