fix type error

teensy/README.md

@@ -4,7 +4,7 @@ Currently the Teensy 3.1 port of Micro Python builds under Linux and not under W
 
 The tool chain required for the build can be found at <https://launchpad.net/gcc-arm-embedded>.
 
-Downlaod the current Linux *.tar.bz2 file. Instructions regarding unpacking the file and moving it to the correct location
+Download the current Linux *.tar.bz2 file. Instructions regarding unpacking the file and moving it to the correct location
 as well as adding the extracted folders to the enviroment variable can be found at
 <http://eliaselectronics.com/stm32f4-tutorials/setting-up-the-stm32f4-arm-development-toolchain/>