[DOC] License link in documentation 404's

[adswa]

Hello 👋 :)
I read through the documentation and notived that the "License" header in the documentation points to https://raw.githubusercontent.com/mne-tools/mne-icalabel/blob/main/LICENSE, which does not resolve. The correct link would be https://raw.githubusercontent.com/mne-tools/mne-icalabel/main/LICENSE.

Here's a patch:

diff --git a/doc/index.rst b/doc/index.rst
index 2a33c25..257ed39 100644
--- a/doc/index.rst
+++ b/doc/index.rst
@@ -32,7 +32,7 @@ Contents
    :hidden:
    :caption: Development
 
-   License <https://raw.githubusercontent.com/mne-tools/mne-icalabel/blob/main/LICENSE>
+   License <https://raw.githubusercontent.com/mne-tools/mne-icalabel/main/LICENSE>
    Contributing <https://github.com/mne-tools/mne-icalabel/blob/main/CONTRIBUTING.md>
 
 License

Found while doing openjournals/joss-reviews#4484

PS: I noticed that your repositories "About" overview section on the right links to the development version instead of the stable version of the documentation - is this intentional? Not in any way a problem, adding here as an FYI in case its an unintentional pre-first-release residual, because the empty "Whats new" page in the development version caught my eye and I'm used to redirection to the stable docs by mne-python. Ignore if this choice intentional or preferred.

[mscheltienne]

Thanks for the review, that should be fixed, I'll check when it's deployed. For the link in the "About" overview section, @adam2392 do you have any preference?