docs(README.md): Fix CONFIG_STRATEGY value from "separate" to "separation"

[kakakakakku]

Hi😀 Thanks for the useful tools.

I noticed that the README.md described the CONFIG_STRATEGY as separate, but in the actual implementation only separation works.

$ python bin/pulumilocal version
Config strategy: None
Config strategy is not recognised. Falling back to default ("overwrite").
v3.193.0

$ export CONFIG_STRATEGY=overwrite         
$ python bin/pulumilocal version  
v3.193.0

$ export CONFIG_STRATEGY=override 
$ python bin/pulumilocal version 
v3.193.0

$ export CONFIG_STRATEGY=separate
$ python bin/pulumilocal version        
Config strategy: separate
Config strategy is not recognised. Falling back to default ("overwrite").
v3.193.0

$ export CONFIG_STRATEGY=separation        
$ python bin/pulumilocal version          
v3.193.0

Check

I also ran the test tests/test_apply.py::test_config_strategy, and all cases passed successfully.

The separate case is still included in the tests, but from the behavior it seems to be used as an example of falling back to the default (overwrite) strategy when the value is not recognized.

$ pytest -v tests/test_apply.py::test_config_strategy
======================================================= test session starts ========================================================
collected 5 items                                                                                                                  

tests/test_apply.py::test_config_strategy[override] PASSED                                                                                                                               [ 20%]
tests/test_apply.py::test_config_strategy[overwrite] PASSED                                                                                                                              [ 40%]
tests/test_apply.py::test_config_strategy[separation] PASSED                                                                                                                             [ 60%]
tests/test_apply.py::test_config_strategy[separate] PASSED                                                                                                                               [ 80%]
tests/test_apply.py::test_config_strategy[] PASSED                                                                                                                                       [100%]

================================================================================ 5 passed in 124.64s (0:02:04) =================================================================================

Thank you😀

[alexrashed]

Great catch, thanks a lot for the proactive contribution! 💯