variable names should have single backtick

doc/source/api_reference/graphicsItems/imageitem.rst

@@ -31,7 +31,7 @@ adjustments, or with :class:`~pyqtgraph.HistogramLUTItem` or
 table used to display the image.
 
 An image can be placed into a plot area of a given extent directly through the
-:meth:`ImageItem.setRect <pyqtgraph.ImageItem.setRect>` method or the ``rect`` keyword.
+:meth:`ImageItem.setRect <pyqtgraph.ImageItem.setRect>` method or the `rect` keyword.
 This is internally realized through assigning a :class:`QTransform`. For other
 translation, scaling or rotations effects that persist for all later image data, the
 user can also directly define and assign such a transform, as shown in the example
@@ -43,7 +43,7 @@ Performance
 -----------
 
 The performance of :class:`~pyqtgraph.ImageItem` can vary *significantly* based on
-attributes of the ``image``, ``levels`` and ``lut`` input arguments. It should not be
+attributes of the `image`, `levels` and `lut` input arguments. It should not be
 assumed that the default parameters are the most performant, as the default values are 
 largely there to preserve backwards compatibility.
 
@@ -55,12 +55,12 @@ The following guidance should be observed if performance is an important factor
     :python:`pyqtgraph.setConfigOption('imageAxisOrder', 'row-major')`
 
 * Use C-contiguous image data.
-* For 1 or 3 channel data, use `uint8`, `uint16`, `float32`, or `float64` ``image``
+* For 1 or 3 channel data, use `uint8`, `uint16`, `float32`, or `float64` `image`
   dtype.
 * For 4-channel data, use `uint8` or `uint16` with :python:`levels=None`.
-* ``levels`` should be set to either to ``None`` or to single channel ``[min, max]``
+* `levels` should be set to either to ``None`` or to single channel ``[min, max]``
 
-  * Not setting ``levels`` will trigger autoLevels sampling 
+  * Not setting `levels` will trigger autoLevels sampling 
 
 * If using LUTs (lookup tables), ensure they have a dtype of `uint8` and have 256
   points or less. That can be accomplished with calling:
@@ -69,7 +69,7 @@ The following guidance should be observed if performance is an important factor
   * :func:`ImageItem.setLookupTable <pyqtgraph.ImageItem.setLookupTable>` with 
     :python:`ColorMap.getLookupTable(nPts=256)` (default is :python:`nPts=512`)
 
-* For floating point ``image`` arrays, prefer `float32` dtype to `float64` and avoid
+* For floating point `image` arrays, prefer `float32` dtype to `float64` and avoid
   ``NaN`` values.
 * Enable Numba with :python:`pyqtgraph.setConfigOption('useNumba', True)`