docs(rebecca-black): correct grammar

subjects/rebecca-black/README.md

@@ -2,15 +2,15 @@
 
 ### Instructions
 
-Create the following functions:
+Create the following functions which accept a `Date`:
 
-- `isFriday` returns true if the date is a friday
-- `isWeekend` returns true if the date is a day of the weekend
-- `isLeapYear` returns true if the year of the date is a leap year
-- `isLastDayOfMonth` returns true if the date is the last day of the month
+- `isFriday`: returns `true` if the `Date` is a Friday.
+- `isWeekend`: returns `true` if the `Date` is a weekend day.
+- `isLeapYear`: returns `true` if the year of the `Date` is a leap year.
+- `isLastDayOfMonth`: returns `true` if the `Date` represents the last day of the month.
 
 ### Notions
 
-- [date-fns.org/v2.14.0/docs/isWeekend](https://date-fns.org/v2.14.0/docs/isWeekend)
-- [date-fns.org/v2.14.0/docs/isAfter](https://date-fns.org/v2.14.0/docs/isAfter)
-- [date-fns.org/v2.14.0/docs/isLastDayOfMonth](https://date-fns.org/v2.14.0/docs/isLastDayOfMonth)
+- [date-fns: isWeekend](https://date-fns.org/v2.14.0/docs/isWeekend)
+- [date-fns: isAfter](https://date-fns.org/v2.14.0/docs/isAfter)
+- [date-fns: isLastDayOfMonth](https://date-fns.org/v2.14.0/docs/isLastDayOfMonth)