fix circup install instruction

FoamyGuy · FoamyGuy · commit 81858f14259d · 2024-02-26T11:24:44.000-06:00
diff --git a/README.rst b/README.rst
@@ -39,7 +39,7 @@ following command to install:
 
 .. code-block:: shell
 
-    circup install ov5640
+    circup install adafruit_ov5640
 
 Or the following command to update an existing version:
 
