udpate CTA wording to apply suggsetions and to differenciate from each other slightly

Author: hypha

src/content/deadlines/02_reviewer.md

@@ -10,4 +10,4 @@ image: mentorship1.jpg
 <!-- Join the team to review talk proposals! **YOUR** feedback helps us create a
 diverse and high-quality programme. -->
 
-The review period is over. Big thanks to all our reviewers!
+The review period is over. Heartfelt **THANKS** to all our reviewers!

src/content/deadlines/03_voting.md

@@ -8,4 +8,4 @@ image: voting.jpg
 <!-- Vote for the talks **YOU** would like to see! We are a community conference and
 your votes help shape the programme. -->
 
-The Community Voting period is over. Thanks for casting your votes!
+The Community Voting period is over. A huge **THANK YOU** for everyone who voted!