Update exercises/split-second-stopwatch/metadata.toml

Co-authored-by: Isaac Good <IsaacG@users.noreply.github.com>

Author: ErikSchierboom

exercises/split-second-stopwatch/metadata.toml

@@ -1,4 +1,4 @@
-title = "Split-second Stopwatch"
+title = "Split-Second Stopwatch"
 blurb = "Keep track of time through a digital stopwatch."
 source = "Erik Schierboom"
 source_url = "https://github.com/exercism/problem-specifications/pull/TODO"