fix circup instruction

FoamyGuy · FoamyGuy · commit 2085b8feb71b · 2024-02-26T14:27:42.000-06:00
diff --git a/README.rst b/README.rst
@@ -86,7 +86,7 @@ following command to install:
 
 .. code-block:: shell
 
-    circup install tca8418
+    circup install adafruit_tca8418
 
 Or the following command to update an existing version:
 
