Update hackathon-barcelona.mdx

sites/main-site/src/content/events/2024/hackathon-barcelona.mdx

@@ -310,9 +310,9 @@ You can move freely between projects throughout the event.
 >
     nf-core/phaseimpute is a multi-steps pipeline dedicated to genetic imputation from simulation to validation.
     By joining this group you can
-        1) Contribut back from update subworkflows and modules to nf-core (beginner - intermediate level)
-        2) Improve the documentation and check the grammar, readability (beginner)
-        3) Help for the review before the release (beginner to expert)
+        1) Contribute updated subworkflows and modules back to nf-core (beginner - intermediate level)
+        2) Improve documentation and enhance readability (beginner)
+        3) Assist with pre-release review (beginner to expert)
         4) Add support for SNP chip array data (simulation and imputation) (expert)
         5) Add support for sexual chromosome imputation (expert)