docs: add section on requesting refreshable Braille display loaners

docs/index.qmd

@@ -291,6 +291,11 @@ In the braille representation of segmented bar plots, braille depends on where y
 - Summary level: Same as regular level, but values now reflect the combined magnitude of all levels' values for this point.
 - Combined level: Similar to heatmap, where there are groups of magnitudes for each point separated by a ⢳ character. The first group has braille characters for each level for the first point, then a separator, then the second group has braille characters for each level in the second point, then a separator, and so on.
 
+## Getting Refreshable Braille Display Loaner
+
+If you are a blind user and do not have a refreshable Braille display, you can request a loaner from the National Library Service (NLS) for the Blind and Print Disabled. Please follow our instruction on [how to request an NLS eReader Braille Display](https://xabilitylab.ischool.illinois.edu/braille-display).
+
+
 ## Instruction on How to Verify and Use the AI Feature in py-maidr
 
 We provide AI API keys only to alpha testers who have shared their email addresses through our survey form. If you are not an alpha tester, you can still use the AI feature by manually providing your own AI API keys in the Help menu.