docs(readme): small note in shell config and fix line space

Clarified IRIS's advantages over Fig and added note about auto-start configuration.

README.md

@@ -50,7 +50,7 @@ Run iris wherever you already work; your local machine, a remote server, or anyw
 ## Why IRIS instead of Fig
 
 > [!IMPORTANT]
-> **[Fig](https://app.fig.io/) was officially sunset in September 2024 and migrated to Amazon Q Developer (which requires cloud authentication and proprietary bloat)**
+> **[Fig](https://app.fig.io/) was officially sunset in September 2024 and migrated to Amazon Q Developer (which requires cloud authentication and proprietary bloat)**  
 > **IRIS is the lightweight, open-source, zero-telemetry alternative built purely on native Go and TTY with no accounts, no GUI app, and no background daemons required**
 
 ### How it compares
@@ -242,7 +242,8 @@ iris uninstall
 > [!WARNING]
 > **IRIS may cause visual conflicts and keybinding overlaps with other shell autosuggestion plugins or third-party completion tools. To prevent this, please disable them safely (e.g., zsh-autosuggestions, zsh-autocomplete, atuin, flyline, ...)**
 
-### Auto-start IRIS on shell init
+> [!NOTE]
+> **This is already added from installation script, but if your shell config is missing it, please add manually**
 
 To automatically start IRIS every time you open a new shell session, add the init command to your shell config: