docs: updated the projetc's documentation

FossilOrigin-Name: f8837cec2d4bd63c2b2b0f9a6629946c609fbbe93487b4a065a21c7a2366e2d9

doc/available_rules.rst

@@ -768,9 +768,10 @@ The syntax in a configuration file is::
 * namingConv is the name of the rule. It is case-insensitive, thus it can be
   set as *namingconv*, *namingConv* or *nAmInGcOnV*.
 * entityType is the type of code's entities to check. Possible values are:
-  variables - check the declarations of variables, enumerations - check the
-  names of enumerations values and procedures - check the names of the
-  declarations of procedures.
+  *variables* - check the declarations of variables, *enumerations* - check the
+  names of enumerations values, *procedures* - check the names of the
+  declarations of procedures and *types* - check the names of the declared
+  types.
 * nameExpression - the regular expression which the names of the selected
   entities should follow. Any expression supported by PCRE is allowed.