In-line documentation on histogram buckets is incorrect

[TigerHe7]

Bug:
The documentation for the histogram type is incorrect in stating that the explicit bucket boundaries are inclusive upper bounds when they are actually inclusive lower bounds.

In-line comment:

opentelemetry-js/packages/opentelemetry-metrics/src/export/types.ts

Lines 56 to 70 in 6eb51a2

	* Buckets are implemented using two different array:
	* - boundaries contains every boundary (which are upper boundary for each slice)
	* - counts contains count of event for each slice
	*
	* Note that we'll always have n+1 (where n is the number of boundaries) slice
	* because we need to count event that are above the highest boundary. This is the
	* reason why it's not implement using array of object, because the last slice
	* dont have any boundary.
	*
	* Example if we measure the values: [5, 30, 5, 40, 5, 15, 15, 15, 25]
	* with the boundaries [ 10, 20, 30 ], we will have the following state:
	*
	* buckets: {
	* boundaries: [10, 20, 30],
	* counts: [3, 3, 2, 1],

Histogram aggregator implementation:

opentelemetry-js/packages/opentelemetry-metrics/src/export/aggregators/Histogram.ts

Lines 47 to 60 in 6eb51a2

	update(value: number): void {
	this._current.count += 1;
	this._current.sum += value;
	for (let i = 0; i < this._boundaries.length; i++) {
	if (value < this._boundaries[i]) {
	this._current.buckets.counts[i] += 1;
	return;
	}
	}
	// value is above all observed boundaries
	this._current.buckets.counts[this._boundaries.length] += 1;
	}