Add punctuation to short_description

Author: shaedrich

topics/coverage/index.md

@@ -1,6 +1,6 @@
 ---
 display_name: Coverage
-short_description: Coverage is the percentage of your project being covered by—depending on the perspective—code or tests
+short_description: Coverage is the percentage of your project being covered by—depending on the perspective—code or tests.
 topic: coverage
 related: code-coverage, test-coverage, path-coverage, line-coverage, branch-coverage, automated-testing, coverage-report, serenity-bdd, cicd
 ---