Your text in the bullets is set to Justified, so all the lines except for the last one in a bullet item are trying to fill the width of the column by spreading everything out. Instead, use Flush Left for those items for better results.
...and in general, don't justify short bullet points. Only when they wrap around several lines and the 'squared' look enhances the readability.
I had a look at your file and these are the things you should change: