website: Extend the gem5 Workshop Presentation deadline

Change-Id: Ia1b67228660043aab2c8029e74fbda6dfc04873c
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5-website/+/58251
Reviewed-by: Bobby Bruce <bbruce@ucdavis.edu>
Maintainer: Bobby Bruce <bbruce@ucdavis.edu>
Tested-by: Bobby Bruce <bbruce@ucdavis.edu>
diff --git a/_pages/events/isca-2022.md b/_pages/events/isca-2022.md
index 2e976dd..323291d 100644
--- a/_pages/events/isca-2022.md
+++ b/_pages/events/isca-2022.md
@@ -17,8 +17,8 @@
 
 ## Key Dates
 
-* Workshop presentation proposal deadline: **April 19th 2022** (Presentation abstracts can be submitted [here](https://forms.gle/VZxXsWBniUPGBQdw5))
-* Workshop acceptance notifications: **May 2nd 2022**
+* Workshop presentation proposal deadline: **April 26th 2022** (Presentation abstracts can be submitted [here](https://forms.gle/VZxXsWBniUPGBQdw5))
+* Workshop acceptance notifications: **May 9th 2022**
 * ISCA Conference: **June 18th to June 22th 2022**
 * gem5 Tutorial: **June 18th 2022 (Morning Session)**
 * gem5 Users' Workshop: **June 18th 2022 (Afternoon Session)**
@@ -74,4 +74,4 @@
 
 If you wish to present at this year's gem5 User's workshop please provide a presentation proposal (a 1 page PDF) here: <https://forms.gle/VZxXsWBniUPGBQdw5>. **Note: This is an in-person event. The presenter must attend the workshop**.
 
-The deadline for submitting a presentation proposal is **April 19th** with acceptance notifications sent out by **May 2nd**.
+The deadline for submitting a presentation proposal is **April 26th** with acceptance notifications sent out by **May 9th**.