update elements and fix some bugs

lib/src/prism/components/prism-scala.min.js

-Prism.languages.scala=Prism.languages.extend("java",{keyword:/(<-|=>)|\b(abstract|case|catch|class|def|do|else|extends|final|finally|for|forSome|if|implicit|import|lazy|match|new|null|object|override|package|private|protected|return|sealed|self|super|this|throw|trait|try|type|val|var|while|with|yield)\b/,builtin:/\b(String|Int|Long|Short|Byte|Boolean|Double|Float|Char|Any|AnyRef|AnyVal|Unit|Nothing)\b/,number:/\b0x[\da-f]*\.?[\da-f\-]+\b|\b\d*\.?\d+[e]?[\d]*[dfl]?\b/i,symbol:/'([^\d\s]\w*)/,string:/(""")[\W\w]*?\1|("|\/)[\W\w]*?\2|('.')/}),delete Prism.languages.scala["class-name"],delete Prism.languages.scala["function"];
+Prism.languages.scala=Prism.languages.extend("java",{keyword:/<-|=>|\b(?:abstract|case|catch|class|def|do|else|extends|final|finally|for|forSome|if|implicit|import|lazy|match|new|null|object|override|package|private|protected|return|sealed|self|super|this|throw|trait|try|type|val|var|while|with|yield)\b/,string:/"""[\W\w]*?"""|"(?:[^"\\\r\n]|\\.)*"|'(?:[^\\\r\n']|\\.[^\\']*)'/,builtin:/\b(?:String|Int|Long|Short|Byte|Boolean|Double|Float|Char|Any|AnyRef|AnyVal|Unit|Nothing)\b/,number:/\b(?:0x[\da-f]*\.?[\da-f]+|\d*\.?\d+e?\d*[dfl]?)\b/i,symbol:/'[^\d\s\\]\w*/}),delete Prism.languages.scala["class-name"],delete Prism.languages.scala["function"];