Correct type for results of getMindfulSession

[TrangPham]

Description

getMindfulSession had incorrect type set for return value. It should be Array instead of HealthValue.

docs are correct: https://github.com/agencyenterprise/react-native-health/blob/master/docs/getMindfulSession.md

code returns array:

react-native-health/RCTAppleHealthKit/RCTAppleHealthKit+Methods_Mindfulness.m

Line 41 in 5ac6983

NSMutableArray *data = [NSMutableArray arrayWithCapacity:(10)];

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have made corresponding changes to the documentation
• I have checked my code and corrected any misspellings