Fix Ascher problem typos

Author: Steven-Roberts

toolbox/+otp/+ascherlineardae/+presets/Canonical.m

@@ -1,10 +1,10 @@
 classdef Canonical < otp.ascherlineardae.AscherLinearDAEProblem
-    % The problem defined by Uri Ascher in :cite:p:`Asc89` (sec. 2) which uses time span $t ∈ [0, 1]$ and intial 
-    % condition $[y_0, z_0]^T = [1, β]^T$.
+    % The problem defined by Ascher in :cite:p:`Asc89` (sec. 2) which uses time span $t ∈ [0, 1]$ and intial condition
+    % $[y_0, z_0]^T = [1, β]^T$.
 
     methods
         function obj = Canonical(varargin)
-            % Create the Canonical Ascher Linear DAE problem object.
+            % Create the canonical Ascher linear DAE problem object.
             %
             % Parameters
             % ----------

toolbox/+otp/+ascherlineardae/+presets/Petzold.m

@@ -1,10 +1,10 @@
 classdef Petzold < otp.ascherlineardae.AscherLinearDAEProblem
-    % The Petzold DAE example :cite:p:`Pet86` as a special case of the Ascher linear DAE problem. This preset uses time
+    % The Petzold DAE example :cite:p:`Pet86` is a special case of the Ascher linear DAE problem. This preset uses time
     % span $t ∈ [0, 1]$ and $β = 0 $ with the initial condition $[y_0, z_0]^T = [1, 0]^T$.
 
     methods
         function obj = Petzold()
-            % Create the Petzold Ascher Linear DAE problem object.
+            % Create the Petzold–Ascher linear DAE problem object.
 
             params = otp.ascherlineardae.AscherLinearDAEParameters('Beta', 0);
             y0 = [1; params.Beta];

toolbox/+otp/+ascherlineardae/+presets/Stiff.m

@@ -1,10 +1,10 @@
 classdef Stiff < otp.ascherlineardae.AscherLinearDAEProblem
-    % The Stiff example from :cite:p:`Asc89`. A variant of the Ascher linear DAE problem which uses time span 
+    % The stiff example from :cite:p:`Asc89`. It is a variant of the Ascher linear DAE problem which uses time span 
     % $t ∈ [0, 1]$ and $β = 100$ with the initial condition $[y_0, z_0]^T = [1, 100]^T$.
 
     methods
         function obj = Stiff()
-            % Create the stiff Ascher Linear DAE problem object.
+            % Create the stiff Ascher linear DAE problem object.
 
             params = otp.ascherlineardae.AscherLinearDAEParameters('Beta', 100);
             y0 = [1; params.Beta];

toolbox/+otp/+ascherlineardae/AscherLinearDAEParameters.m

@@ -1,5 +1,5 @@
 classdef AscherLinearDAEParameters < otp.Parameters
-    % Parameters for Ascher Linear DAE problem.
+    % Parameters for Ascher linear DAE problem.
 
     properties
         % A scalar parameter $β$ in the linear model. It affects the stifness of the problem.
@@ -8,7 +8,7 @@
 
     methods
         function obj = AscherLinearDAEParameters(varargin)
-            % Create a Ascher Linear DAE parameters object.
+            % Create a Ascher linear DAE parameters object.
             %
             % Parameters
             % ----------

toolbox/+otp/+ascherlineardae/AscherLinearDAEProblem.m

@@ -1,7 +1,7 @@
 classdef AscherLinearDAEProblem < otp.Problem
     % A linear differential-algebraic problem with a time-dependant mass matrix.
     %
-    % The Ascher linear DAE Problem :cite:p:`Asc89` is an index-1 differential-agebraic equation given by
+    % The Ascher linear DAE problem :cite:p:`Asc89` is an index-1 differential-agebraic equation given by
     %
     % $$
     % \begin{bmatrix}