Cleaning up Sinhala README file
Cleaning up Sinhala README file

Cleaning up the readme file a bit, fixing capitalization and other minor things.
googlei18n/language-resources,googlei18n/language-resources,google/language-resources,google/language-resources,google/language-resources,googlei18n/language-resources,google/language-resources,google/language-resources,googlei18n/language-resources,google/language-resources,googlei18n/language-resources,googlei18n/language-resources