You are using weird characters.
Those characters should be plain quotations marks. Like so.
CODE
src="images/garbage.jpg"
The characters you see are supposed to be curly quotes, smart quotes. You may have used Word or similar to write the HTML and it has inserted those fancy quotes. If you open a document with such characters in a plain text editor that doesn't support unicode you might see those garbage characters instead, though some might support the curlies too. You may have done something like this and then saved the document.
Curly quotes are never allowed in HTML, not even in a unicode document. Even if the text can use unicode characters the HTML part is always strictly restricted to ANSI characters. That basically goes for all computer languages, not only HTML.
What you need to do is to open the document in a plain text editor and replace those two garbage strings with straight quotes throughout the document. You can use Find & Replace. Note the garbage strings are different for opening and closing quotes, so you must replace them one by one. You may have other funky characters in the document too. If you can spot them it's good. Otherwise keep this in mind if something else screws up.
Don't use Word and the like to write HTML or any kind of code.