Change "Object" to plural (typo)

[NessDan]

Description

Typo in the docs.

Singular "Object" doesn't make sense here:

Object similar to contracts, such as other composite types like structs or resources, require that the init() function initialize any fields that are declared in a composite type.

So I made it plural.

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• Targeted PR against master branch
• Linked to Github issue with discussion and accepted design OR link to spec that describes this work
• Code follows the standards mentioned here
• Updated relevant documentation
• Re-reviewed Files changed in the Github PR explorer
• Added appropriate labels

[turbolent]

Thank you!