Update date suffix in blog post about 3.7, 3.8 and 3.9 releases

Author: gemmellr

_posts/2023-12-19-our-plans-for-quarkus-3-7-3-8-3-9-released.adoc

@@ -30,7 +30,7 @@ make sure it has been merged in the https://github.com/quarkusio/quarkus[Quarkus
 
 == Quarkus 3.7
 
-Quarkus 3.7 will be released on January 31th.
+Quarkus 3.7 will be released on January 31st.
 It will contain new features, as usual for our minor releases.
 
 As previously announced, the minimum Java version for Quarkus 3.7 will be Java 17.