docs: tweak

Author: domenkozar

docs/src/content/docs/index.mdx

@@ -45,7 +45,7 @@ REDIS_URL = { description = "Redis connection string", required = false }
 ```
 
 ```bash
-# Initialize secretspec.toml from existing .env files
+# Initialize secretspec.toml, possibly from `.env`
 $ secretspec init --from .env
 ```