Merge branch 'hw3-reading' into 'UACCESS-23fa'

Adding links for readings week 3 ed post

See merge request undergrad-accessibility-website!32

schedule.md

@@ -121,11 +121,11 @@ Practice with Plain Language
 : 
 
 - **Required**
-  - Accessibility Testing: Read [The Importance of Manual Accessibility Testing](https://www.smashingmagazine.com/2018/09/importance-manual-accessibility-testing/) and [**Respond**](TBD)
-  - Read about [creating accessible images and diagrams](https://dis.acm.org/2023/creating-accessible-figures-and-tables/) and [**Respond**](TBD)
+  - Accessibility Testing: Read [The Importance of Manual Accessibility Testing](https://www.smashingmagazine.com/2018/09/importance-manual-accessibility-testing/) and [**Respond**](https://edstem.org/us/courses/41400/discussion/3580191)
+  - Read about [creating accessible images and diagrams](https://dis.acm.org/2023/creating-accessible-figures-and-tables/) and [**Respond**](https://edstem.org/us/courses/41400/discussion/3580191)
        - Find a non-text content on the web that does not have ALT text (something other than a photograph)
        - [Post](https://edstem.org/us/courses/31170/discussion/2394641) a description of [the leftmost GUI](img/assessment/gui.png) 
-  - Audio Description: Read [What is audio description?](https://adp.acb.org/articles/adprocess.html) (from [The Audio Description Project](https://www.acb.org/adp/ad.html)) and [**Respond**](TBD)
+  - Audio Description: Read [What is audio description?](https://adp.acb.org/articles/adprocess.html) (from [The Audio Description Project](https://www.acb.org/adp/ad.html)) and [**Respond**](https://edstem.org/us/courses/41400/discussion/3580191)
 - **If you want to dig deeper**
    - Read about [Switches](https://axesslab.com/switches/)
    - Try out the [Image ALT Text Tutorial](https://webaim.org/techniques/alttext/)