Update src/content/pages/programme/mentorship.mdx

Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>

Author: ashiorkornortey

src/content/pages/programme/mentorship.mdx

@@ -46,7 +46,7 @@ If you require help contributing to EuroPython, especially if you are from an
 underrepresented or a marginalised group in the tech industry, you are welcome
 to submit your application in the form above to become a mentee.
 
-<Button disabled>Sign Up closed</Button>
+<Button disabled>Sign up closed</Button>
 
 ## 2. Workshops