Fix path + typo in README.md (#347)

* Fix path + typo in README.md

* Remove incorrect path change

* Remove typo

Author: Exr0n

README.md

@@ -4,7 +4,7 @@ The Raspberry Pi Pico SDK (henceforth the SDK) provides the headers, libraries a
 necessary to write programs for the RP2040-based devices such as the Raspberry Pi Pico
 in C, C++ or assembly language.
 
-The SDK  is designed to provide an API and programming environment that is familiar both to non-embedded C developers and embedded C developers alike.
+The SDK is designed to provide an API and programming environment that is familiar both to non-embedded C developers and embedded C developers alike.
 A single program runs on the device at a time and starts with a conventional `main()` method. Standard C/C++ libraries are supported along with
 C level libraries/APIs for accessing all of the RP2040's hardware include PIO (Programmable IO).