fix typos in .js files

[kevgeoleo]

Made the following changes:

"src/lib/spar_bytecode_heatmap.js:28:15 - Unknown word (Lenght) fix: (Length)",
"src/lib/spar_bytecode_heatmap.js:52:51 - Unknown word (unkown) fix: (unknown)",
"src/signatureProvider.js:97:45 - Unknown word (Paranthesis) fix: (Parenthesis)",
"src/signatureProvider.js:99:28 - Unknown word (Paranthesis) fix: (Parenthesis)",
"src/signatureProvider.js:99:54 - Unknown word (Paranthesis) fix: (Parenthesis)",
"src/signatureProvider.js:104:21 - Unknown word (Paranthesis) fix: (Parenthesis)",
"src/signatureProvider.js:109:26 - Unknown word (Paranthesis) fix: (Parenthesis)",
"src/tokenizer.js:32:12 - Unknown word (Paranthesis) fix: (Parenthesis)",
"src/tokenizer.js:51:12 - Unknown word (Paranthesis) fix: (Parenthesis)",
"src/tokenizer.js:56:23 - Unknown word (Paranthesis) fix: (Parenthesis)",
"src/tokenizer.js:86:16 - Unknown word (Paranthesis) fix: (Parenthesis)",
"src/tokenizer.js:192:17 - Unknown word (Paranthesis) fix: (Parenthesis)",
"src/wikiProvider.js:88:45 - Unknown word (ommitted) fix: (omitted)"