docs: fix readme CI badge

Author: wpbonelli

README.md

@@ -1,6 +1,6 @@
 # install-intelfortran-action
 
-[![CI](https://github.com/modflowpy/install-intelfortran-action/actions/workflows/commit.yml/badge.svg?branch=develop)](https://github.com/modflowpy/install-intelfortran-action/actions/workflows/commit.yml)
+[![CI](https://github.com/modflowpy/install-intelfortran-action/actions/workflows/ci.yml/badge.svg?branch=main)](https://github.com/modflowpy/install-intelfortran-action/actions/workflows/ci.yml)
 
 An action to install the [Intel OneAPI](https://www.intel.com/content/www/us/en/developer/tools/oneapi/fortran-compiler.html#gs.bksc2p) Fortran compiler.
 
@@ -45,4 +45,4 @@ Or from command prompt:
 
 ```
 set "PATH=C:\Program Files\Microsoft Visual Studio\2022\Enterprise\VC\Tools\MSVC\14.33.31629\bin\Hostx64\x64;%PATH%"
-```
+```