API: fix documentation for legacy enable/disable

[barsnick]

Describe your changes

The API module provides an "easy" legacy interface for enabling/disabling a connector.

The generic enable/disable call it maps to was not documented correctly. A value used incorrect case, and the priority did not reflect what the actual code did.

I'm not sure whether it was actually intentional that the priority is set to 100 in the code.

everest-core/modules/API/API.cpp

Lines 408 to 409 in 1e06aaa

	types::evse_manager::EnableDisableSource enable_source{types::evse_manager::Enable_source::LocalAPI,
	types::evse_manager::Enable_state::Enable, 100};

The priority is a range from 0 to 10000, and 0 seems more reasonable:

everest-core/modules/EvseManager/Charger.cpp

Line 1511 in 1e06aaa

Evaluation will be done based on priorities. 0 is the highest priority, 10000 the lowest, so in this example the

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Checklist before requesting a review

• I have performed a self-review of my code
• I have made corresponding changes to the documentation
• I read the contribution documentation and made sure that my changes meet its requirements