docs(bloc_lint): update installation snippet (#4558)

Author: felangel

docs/src/components/lint/InstallBlocLintSnippet.astro

@@ -1,7 +1,7 @@
 ---
 import { Code } from '@astrojs/starlight/components';
 
-const code = `dart pub add --dev bloc_lint:^0.2.0-dev`;
+const code = `dart pub add --dev bloc_lint:^0.2.0`;
 ---
 
 <Code code={code} lang="sh" />