docs: Add update documentation (#2418)

Added documentation about upgrading starship itself via bash script.

1 files changed, 1 insertions, 0 deletions

diff --git a/README.md b/README.md
index e3c504642..dfc3fdfa6 100644
--- a/README.md
+++ b/README.md
@@ -159,6 +159,7 @@ shown below. Can't see yours? Have a look at the [extra platform instructions](h
    ```sh
    curl -fsSL https://starship.rs/install.sh | bash
    ```
+   To update the Starship itself, rerun the above script. It will replace the current version without touching Starship's configuration.
 
    #### Install via Package Manager