docs(bindCallback): regularly scheduled maintenance checkup (#4062)
docs(bindCallback): regularly scheduled maintenance checkup (#4062)

* docs(bindCallback): regularly scheduled maintenance checkup

* docs(bindCallback): code review fix

ReactiveX/rxjs,trxcllnt/RxJS,ReactiveX/rxjs,benlesh/RxJS,ReactiveX/RxJS,martinsik/rxjs,kwonoj/RxJS,martinsik/rxjs,Brocco/RxJS,benlesh/RxJS,kwonoj/RxJS,martinsik/rxjs,benlesh/RxJS,ReactiveX/rxjs,martinsik/rxjs,trxcllnt/RxJS,Brocco/RxJS,kwonoj/RxJS,ReactiveX/RxJS,ReactiveX/RxJS,Brocco/RxJS,trxcllnt/RxJS,ReactiveX/rxjs,Brocco/RxJS,kwonoj/RxJS,trxcllnt/RxJS,ReactiveX/RxJS,benlesh/RxJS