Fix typos in ReadMe file

Author: dempseyatgithub

ReadMe.md

@@ -57,8 +57,8 @@ These comments can be turned off in the Preferences sheet for a more compact fil
 – Updated list of build setting description files to include LLDB 7.1 file.  
 – Updated list of build setting description files to include LLDB 8.0 file.  
 – Added support for reading build setting descriptions from xcspec files.  
-– Updated to extract builds settings from Xcode 6.3-compatible project files.  
-– Updated to extract builds settings from Xcode 8.0-compatible project files.
+– Updated to extract build settings from Xcode 6.3-compatible project files.  
+– Updated to extract build settings from Xcode 8.0-compatible project files.
 
 *Version 1.2.3*  
 *Nov 9, 2015*