[enum] anychart.enums.AnnotationTypesImprove this Doc

Annotations type.

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Value	Description	Example
andrewsPitchfork	Andrews Pitchfork annotation.
ellipse	Ellipse annotation.
fibonacciArc	Fibonacci arc annotation.
fibonacciFan	Fibonacci fan annotation.
fibonacciRetracement	Fibonacci retracement annotation.
fibonacciTimezones	Fibonacci timezones annotation.
horizontalLine	Horizontal line annotation.
infiniteLine	Infinite line annotation.
line	Line annotation.
marker	Marker annotation.
ray	Ray annotation.
rectangle	Rectangle annotation.
trendChannel	Trend channel annotation.
triangle	Triangle annotation.
verticalLine	Vertical line annotation.