Add missing comma in list declaration, fix #413
Add missing comma in list declaration, fix #413

The missing comma makes the two distinct list items "insert_best_completion" and "typescript_format_on_key" concatenate into a single 
"insert_best_completiontypescript_format_on_key" list item. The if condition then evaluates to true even when command_name is one of the two names which is clearly not intended.

This change should fix #413. Tab completion emits the "insert_best_completion" command which eventually takes the interpreter to the aforementioned if block and has it call the `reload_buffer` function. I was no longer able to reproduce #413 after this change.
Microsoft/TypeScript-Sublime-Plugin,Microsoft/TypeScript-Sublime-Plugin,Microsoft/TypeScript-Sublime-Plugin,zhengbli/TypeScript-Sublime-Plugin,zhengbli/TypeScript-Sublime-Plugin,zhengbli/TypeScript-Sublime-Plugin