[ModelicaSystem] update docstring for __init__() and model()

Author: syntron

OMPython/ModelicaSystem.py

@@ -319,10 +319,7 @@ def __init__(
             omhome: Optional[str] = None,
             omc_process: Optional[OMCProcess] = None,
     ) -> None:
-        """Initialize, load and build a model.
-
-        The constructor loads the model file and builds it, generating exe and
-        xml files, etc.
+        """Create a ModelicaSystem instance. To define the model use model() or convertFmu2Mo().
 
         Args:
             commandLineOptions: List with extra command line options as elements. The list elements are
@@ -387,10 +384,9 @@ def model(
             variable_filter: Optional[str] = None,
             build: bool = True,
     ) -> None:
-        """Initialize, load and build a model.
+        """Load and build a Modelica model.
 
-        The constructor loads the model file and builds it, generating exe and
-        xml files, etc.
+        This method loads the model file and builds it if requested (build == True).
 
         Args:
             file: Path to the model file. Either absolute or relative to