DOCS: Update reference to getImageTypes() function to reflect change by

#291

PR 291 changed the name of the function, but failed to correct the reference to it in the developers section of the documentation.

docs/developers.rst

@@ -7,7 +7,7 @@ Developers
 This section contains information on how to add or customize the feature classes and filters available in PyRadiomics.
 PyRadiomics enumerates the available feature classes and input image types at initialization of the toolbox. These are
 available from the global ``radiomics`` namespace by use of the functions :py:func:`~radiomics.getFeatureClasses()` and
-:py:func:`~radiomics.getInputImageTypes()`, respectively. Individual features in a feature class are enumerated at
+:py:func:`~radiomics.getImageTypes()`, respectively. Individual features in a feature class are enumerated at
 initialization of the class. See also the :ref:`contributing guidelines <radiomics-contributing-label>`.
 
 .. _radiomics-developers-featureclass: