fix i2c scanner typo

Author: sebkopf

.github/workflows/compile-i2c_scanner.yaml

@@ -17,7 +17,7 @@ jobs:
       matrix:
         # CHANGE program and specify lib/aux and non-default src as needed
         program:
-          - name: 'i2s_scanner'
+          - name: 'i2c_scanner'
         # CHANGE platforms as needed
         platform: 
           - {name: 'photon', version: '2.3.1'}