fix /snapshot comment output

.github/workflows/snapshot.yml

@@ -88,7 +88,7 @@ jobs:
             const commands = ${{ steps.snapshot.outputs.snapshots }}.map((snapshot) => {
               const [package, installer] = snapshot.split(": ")
               const [, sha] = installer.split(/@(?=[^@]*$)/)
-              const header = `<b>${package} (${sha}):<br />`
+              const header = `<b>${package} (${sha}):</b><br />`
               const content = "\n```sh\n" + installer + "\n```\n"
               return [header, content].join("\n")
             })