Typos fixing in javascript-utilities.html

Throttle & Debounce :
-occuring +occurring
occuring accidentially, sunce as an even triggered by hover. *occurring accidentally, as an event

Data Options :
-attribue +attribute

Media Queries :
Media queries are the -the backbone
To make -make them easier
.. currently matches the *media query

Image Loaded :
-ususally +usually
which can take +a while