fixed xaxis label for updated SESANS nomenclature from z to delta

src/sas/qtgui/Perspectives/Fitting/FittingUtilities.py

@@ -550,7 +550,7 @@ def residualsData1D(reference_data, current_data, weights):
     residuals.ytransform = 'y'
     if reference_data.isSesans:
         residuals.xtransform = 'x'
-        residuals.xaxis('\\rm{z} ', 'A')
+        residuals.xaxis('\\delta ', 'A')
     # For latter scale changes
     else:
         residuals.xaxis('\\rm{Q} ', 'A^{-1}')

src/sas/qtgui/Perspectives/Fitting/media/fitting_help.rst

@@ -1143,7 +1143,7 @@ Load the .ses file and Send to Fitting as normal.
 
 The first true indication that the data are not SANS data comes when the
 data are plotted. Instead of *Intensity* vs *Q*, the data are displayed
-as a normalised depolarisation (*P*) vs spin-echo length (*z*).
+as a normalised depolarisation (*P*) vs spin-echo length (:math:`{\delta}`).
 
 .. image:: fitting_sesans_2.png
 
@@ -1168,4 +1168,4 @@ command line interpreter, see :ref:`sesans_fitting`.
 
 .. ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ
 
-.. note::  This help document was last changed by Steve King, 26Oct2022
+.. note::  This help document was last changed by Caitlyn Wolf, 19March2024