docs: fix common error with extra dash

[carlinmack]

In English you "click the Submit button" not "click the Submit-button".

This PR is a find and replace for all instances of '-button' in .lr files with " button". The prevents this from affecting filenames.

Examples (ctrl+F for button):

• https://help.osf.io/article/201-create-a-view-only-link-for-a-project
• https://help.figma.com/hc/en-us/articles/360038663154-Create-components-to-reuse-in-designs#01H8CYSGQ09HD5K7QNJYFZE78Q
• https://www.overleaf.com/learn/how-to/How_do_I_download_the_automatically_generated_files_(e.g._.bbl%2C_.aux%2C_.ind%2C_.gls)_for_my_project%3F_My_publisher_asked_me_to_include_them_in_my_submission

I changed this in #111 before realising this is very common

[carlinmack]

Yep, changed the other cases too now