Fix common typo in doc comment of all helper classes

dlint/linters/helpers/bad_builtin_use.py

@@ -14,7 +14,7 @@
 
 
 class BadBuiltinUseLinter(base.BaseLinter, util.ABC):
-    """This abstract base class provides an simple interface for creating new
+    """This abstract base class provides a simple interface for creating new
     lint rules that block builtin functions.
     """
     @property

dlint/linters/helpers/bad_kwarg_use.py

@@ -17,7 +17,7 @@
 
 
 class BadKwargUseLinter(base.BaseLinter, util.ABC):
-    """This abstract base class provides an simple interface for creating new
+    """This abstract base class provides a simple interface for creating new
     lint rules that block bad kwarg use.
     """
 

dlint/linters/helpers/bad_module_attribute_use.py

@@ -15,7 +15,7 @@
 
 
 class BadModuleAttributeUseLinter(base.BaseLinter, util.ABC):
-    """This abstract base class provides an simple interface for creating new
+    """This abstract base class provides a simple interface for creating new
     lint rules that block bad attributes within a module.
     """
 

dlint/linters/helpers/bad_module_use.py

@@ -15,7 +15,7 @@
 
 
 class BadModuleUseLinter(base.BaseLinter, util.ABC):
-    """This abstract base class provides an simple interface for creating new
+    """This abstract base class provides a simple interface for creating new
     lint rules that block bad modules.
     """
 

dlint/linters/helpers/bad_name_attribute_use.py

@@ -22,7 +22,7 @@
 
 
 class BadNameAttributeUseLinter(base.BaseLinter, util.ABC):
-    """This abstract base class provides an simple interface for creating new
+    """This abstract base class provides a simple interface for creating new
     lint rules that block bad attributes on a variable object.
     """