Various minor fixes and cleanups for the election dApp tut

[webpro]

Reason:

Closes [issue link]

Changes made (preferably with images/screenshots):

Check off the following:

• I have reviewed my changes and run the appropriate tests.
• I have have run rush change to add the appropriate change logs.
• I have added/edited docs.
• I have added tutorials.
• I have double checked and DEFINITELY added docs.

[EnoF]

Symbols are string literals representing some unique item in the runtime, like a function or a table name. Their representation internally is simply a string literal so their usage is idiomatic.
Symbols are created with a preceding tick, thus they do not support whitespace nor multiline syntax.

Though on most projects I've seen, usually they use a symbol where possible, probably because it's more strict and therefore conveys the idea better? So I'm not entirely sure if we want to change from from ' to "

[webpro]

The single quote breaks syntax highlighting

[trendzetter]

The single quote breaks syntax highlighting

shouldn't be the case. the atom pact-lang plugin does take it into account and I submitted a patch for the vscode plugin that can be merged too: kadena-community/pact-vscode#3

[webpro]

I think in general not closing such strings is confusing, but not gonna argue that here. I reverted this change as it is not a fix like I thought initially.