message: doc review: clarify persistence input type
diff: @@ -73,7 +73,7 @@ def _array_handler(a):
  def _limit_to_max_intervals(persistence, max_intervals, key):
  """This function returns truncated persistence if length is bigger than max_intervals.
  :param persistence: Persistence intervals values list. Can be grouped by dimension or not.
  - :type persistence: an array of (dimension, array of (birth, death)) or an array of (birth, death).
  + :type persistence: an array of (dimension, (birth, death)) or an array of (birth, death).
  :param max_intervals: maximal number of intervals to display.
  Selected intervals are those with the longest life time. Set it
  to 0 to see all. Default value is 1000.
  @@ -122,7 +122,7 @@ def plot_persistence_barcode(
  or from a `persistence diagram <fileformats.html#persistence-diagram>`_ file.
  :param persistence: Persistence intervals values list. Can be grouped by dimension or not.
  - :type persistence: an array of (dimension, array of (birth, death)) or an array of (birth, death)
  + :type persistence: an array of (dimension, (birth, death)) or an array of (birth, death)
  :param persistence_file: A `persistence diagram <fileformats.html#persistence-diagram>`_ file style name
  (reset persistence if both are set).
  :type persistence_file: string
  @@ -204,7 +204,7 @@ def plot_persistence_barcode(
  axes.barh(range(len(x)), y, left=x, alpha=alpha, color=c, linewidth=0)
  if legend is None and not nx2_array:
  - # By default, if persistence is an array of (dimension, array of (birth, death)), display the legend
  + # By default, if persistence is an array of (dimension, (birth, death)), display the legend
  legend = True
  if legend:
  @@ -245,7 +245,7 @@ def plot_persistence_diagram(
  homology dimension, or from a `persistence diagram <fileformats.html#persistence-diagram>`_ file`.
  :param persistence: Persistence intervals values list. Can be grouped by dimension or not.
  - :type persistence: an array of (dimension, array of (birth, death)) or an array of (birth, death)
  + :type persistence: an array of (dimension, (birth, death)) or an array of (birth, death)
  :param persistence_file: A `persistence diagram <fileformats.html#persistence-diagram>`_ file style name
  (reset persistence if both are set).
  :type persistence_file: string
  @@ -357,7 +357,7 @@ def plot_persistence_diagram(
  axes.set_yticklabels(ytl)
  if legend is None and not nx2_array:
  - # By default, if persistence is an array of (dimension, array of (birth, death)), display the legend
  + # By default, if persistence is an array of (dimension, (birth, death)), display the legend
  legend = True
  if legend:
  @@ -399,7 +399,7 @@ def plot_persistence_density(
  :Requires: `SciPy <installation.html#scipy>`_
  :param persistence: Persistence intervals values list. Can be grouped by dimension or not.
  - :type persistence: an array of (dimension, array of (birth, death)) or an array of (birth, death)
  + :type persistence: an array of (dimension, (birth, death)) or an array of (birth, death)
  :param persistence_file: A `persistence diagram <fileformats.html#persistence-diagram>`_
  file style name (reset persistence if both are set).
  :type persistence_file: string
  