DOC: fix sphinx errors

murrayrm · murrayrm · commit b9a21e4b1116 · 2021-02-20T13:53:22.000-08:00
diff --git a/control/freqplot.py b/control/freqplot.py
@@ -608,7 +608,7 @@ def nyquist_plot(syslist, omega=None, plot=True, omega_limits=None,
         be 'right' (default), 'left', or 'none'.
 
     warn_nyquist : bool, optional
-        If set to `False', turn off warnings about frequencies above Nyquist.
+        If set to 'False', turn off warnings about frequencies above Nyquist.
 
     *args : :func:`matplotlib.pyplot.plot` positional properties, optional
         Additional arguments for `matplotlib` plots (color, linestyle, etc)
diff --git a/doc/descfcn.rst b/doc/descfcn.rst
@@ -59,7 +59,7 @@ nonlinearity constructors are predefined:
 
 .. code:: python
 
-  backlash_nonlinearity(b)		# backlash nonlinearity with width b
+  friction_backlash_nonlinearity(b)	# backlash nonlinearity with width b
   relay_hysteresis_nonlinearity(b, c)   # relay output of amplitude b with
 					# hysteresis of half-width c
   saturation_nonlinearity(ub[, lb])	# saturation nonlinearity with upper
@@ -81,6 +81,6 @@ Module classes and functions
    :toctree: generated/
 
    ~control.DescribingFunctionNonlinearity
-   ~control.backlash_nonlinearity
+   ~control.friction_backlash_nonlinearity
    ~control.relay_hysteresis_nonlinearity
    ~control.saturation_nonlinearity
