Typo (missing the dot operator)

[RinatValiullov]

proposal-optional-chaining/README.md

Line 58 in 8461024

Unless otherwise noted, in the following languages, the syntax consists of a question mark prepending the operator, (`a?.b`, `a?.b()`, `a?[b]` or `a?(b)` when applicable).

The following constructs are missing the dot . operator:
a?[b] or a?(b)

It should be:
a?.[b] or a?.(b)

[claudepache]

No, because this sentence refers to the languages mentioned in the “Prior Art” section, not to ECMAScript.