added guest lecturers

schedule.md

@@ -256,9 +256,9 @@ Group work on Report
    - Overly narrow views of disability: Multiple disabled people & multiply disabled people
 {% enddetails %}
 
-{% details Monday 10/23: Introduction to Assessing Accessibility} 
+{% details Monday 10/23: Introduction to Assessing Accessibility %} 
 
-**Slides** {% include slide.html title="Assessing Accessibility" loc="evaluation.html" %}
+**Slides** {% include slide.html title="Guest Lecture: Avery Mack: Assessing Accessibility" loc="evaluation.html" %}
 
 {: .homework} Required Reading and Reflection (for Wednesday)
 : 
@@ -289,7 +289,7 @@ Group work on Report
 TBD
 {% enddetails %}
 
-{% details Friday 10/27: Deaf Technology & Innovation (Tentative Guest Lecture Date -- Richard Ladner) %} 
+{% details Friday 10/27: TBD %} 
 
 {: .homework} [Class Participation survey](TBD)
 :