Move the v3.2.0-rc3 to Monday 18th of May

Allow the full week-end (Sat/Sun) for the final changes
for new functionalities to be reviewe and merged.
The RC3 is pushed to Monday 18th.

Change-Id: I2c144e942adcab38efb9ddd983bb78ffadaaaac9
diff --git a/_posts/2020-04-22-gerrit-3.2-release-plan.md b/_posts/2020-04-22-gerrit-3.2-release-plan.md
index 217788c..790cace 100644
--- a/_posts/2020-04-22-gerrit-3.2-release-plan.md
+++ b/_posts/2020-04-22-gerrit-3.2-release-plan.md
@@ -16,7 +16,7 @@
 | April 24  | Create `stable-3.2` and release `3.2.0-rc0` |
 | May 1     | Release `3.2.0-rc1`                         |
 | May 8     | Release `3.2.0-rc2`                         |
-| May 17    | Release `3.2.0-rc3`                         |
+| May 18    | Release `3.2.0-rc3`                         |
 | May 22    | Release `3.2.0-rc4`                         |
 | May 25-29 | "Release week" (see below)                  |
 | June 1    | Final release of `3.2.0`                    |