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Update eager-inference-annotations-for-polymorphic-types.md

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docs/eager-inference-annotations-for-polymorphic-types.md
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## Summary
Introduce a way to opt into monomorphic (greedy) type inference for generics, preventing them from widening into unions when instantiated with different types.
Introduce a way to annotate a polymorphic function signature to express that it will only allow one argument type to interact with automatic instantiation.
## Motivation
@ -27,7 +27,7 @@ test(1, "string") -- Type error: Expected `number`, got `string`
## Design
This RFC proposes adding some symbol next to each type variable which is a clear opt-in.
This RFC proposes adding some symbol as a suffix (or prefix) that annotates the inference behaviour for the generic.
### New Syntax