Fix table syntax error

Author: astralarya

README.md

@@ -58,7 +58,7 @@ Properties you can pass to the console element
 | complete?		| function(words: string[], cursor: number, prompt: string): string[]	| Return a list of possible completions given a list of (`words`), index of the word containing the cursor (`cursor`) , and the full prompt text (`prompt`).
 | continue?		| function(prompt: string): bool					| Return a boolean indicating whether to continue asking for user input on a newline given the current prompt text (`prompt`).
 | handler		| function(command: string): any					| Handle a command (`command`), logging data with `this.log()` or `this.logX()`, and calling `this.return()` when finished.
-| promptLabel?		| string | function(): string						| String displayed to prompt user for input.
+| promptLabel?		| string \| function(): string						| String displayed to prompt user for input.
 | welcomeMessage?	| string								| Initial message displayed after mount.