Fix typos in README.md

Signed-off-by: tharuka <78165134+tharuka-pavith@users.noreply.github.com>

README.md

@@ -19,7 +19,7 @@ Python 3.5 and some select features from later versions). The following core
 datatypes are provided: `str`(including basic Unicode support), `bytes`,
 `bytearray`, `tuple`, `list`, `dict`, `set`, `frozenset`, `array.array`,
 `collections.namedtuple`, classes and instances. Builtin modules include
-`os`, `sys`, `time`, `re`, and `struct`, etc. Select ports have support for
+`os`, `sys`, `time`, `re`, and `struct`, etc. Selected ports have support for
 `_thread` module (multithreading), `socket` and `ssl` for networking, and
 `asyncio`. Note that only a subset of Python 3 functionality is implemented
 for the data types and modules.
@@ -36,7 +36,7 @@ Getting started
 ---------------
 
 See the [online documentation](https://docs.micropython.org/) for API
-references and information about using MicroPython and information about how
+reference and information about using MicroPython and information about how
 it is implemented.
 
 We use [GitHub Discussions](https://github.com/micropython/micropython/discussions)