Update support hours information in documentation (#61013)

Co-authored-by: mc <42146119+mchammer01@users.noreply.github.com>

Author: astropedrito

content/support/learning-about-github-support/about-github-support.md

@@ -141,7 +141,7 @@ To learn more about training options, including customized trainings, see [{% da
 
 ### Support in English
 
-For standard non-urgent issues, we offer support in English 24 hours per day, 5 days per week, excluding weekends and national U.S. holidays. The standard response time is 24 hours.
+For standard non-urgent issues, we offer support in English 24 hours per day, 5 days per week, excluding weekends and national U.S. holidays.
 
 {% ifversion ghes %}
 For urgent issues, we are available 24 hours per day, 7 days per week, even during national U.S. holidays.