[SCons] Minor formatting and docstring updates

SConstruct

@@ -78,8 +78,7 @@ if not COMMAND_LINE_TARGETS:
     sys.exit(1)
 
 if parse_version(SCons.__version__) < parse_version("3.0.0"):
-    logger.error("Cantera requires SCons with a minimum version of 3.0.0. Exiting.",
-                 print_level=False)
+    logger.error("Cantera requires SCons with a minimum version of 3.0.0. Exiting.")
     sys.exit(1)
 
 if os.name not in ["nt", "posix"]:
@@ -268,8 +267,8 @@ config_options = [
         """Path to the MATLAB install directory. This should be the directory
            containing the 'extern', 'bin', etc. subdirectories. Typical values
            are: "C:\\Program Files\\MATLAB\\R2021a" on Windows,
-           "/Applications/MATLAB_R2011a.app" on macOS, or
-           "/opt/MATLAB/R2011a" on Linux.""",
+           "/Applications/MATLAB_R2021a.app" on macOS, or
+           "/opt/MATLAB/R2021a" on Linux.""",
         "", PathVariable.PathAccept),
     EnumOption(
         "f90_interface",

site_scons/buildutils.py

@@ -37,7 +37,13 @@
 
 
 class Option:
-    """Object corresponding to SCons configuration option"""
+    """Object corresponding to SCons configuration option.
+
+    The purpose of this class is to collect system-dependent default parameters for
+    SCons configuration options, which are made available to both help text and
+    reST documentation. The class works in conjunction with the `Configuration` class
+    to select and convert system-dependent parameters to SCons configuration options.
+    """
 
     def __init__(self,
             name: str,
@@ -281,8 +287,11 @@ def to_scons(self, env: "Optional[SCEnvironment]" = None) -> "SCVariables":
 
 class Configuration:
     """
-    Class enabling selection of options based on attribute dictionary entries that
-    allow for differentiation between platform/compiler dependent options.
+    Class enabling selection of options based on a dictionary of `Option` objects
+    that allows for a differentiation between platform/compiler dependent options.
+
+    In addition, the class facilitiates the generation of formatted help text and
+    reST documentation.
     """
 
     header = [