Fix typo in test/ttx/README.md

Author: Snuffleupagus

test/ttx/README.md

@@ -1,3 +1,3 @@
-If `git clone --recursive` was not used, please run `git submodile init; git submodule update` to pull fonttools code.
+If `git clone --recursive` was not used, please run `git submodule init; git submodule update` to pull fonttools code.
 
-Note: python 2.6 for 32-bit is required to run ttx.
+Note: python 2.6 for 32-bit is required to run ttx.