fix a doctest

src/pystencilssfg/composer/basic_composer.py

@@ -412,7 +412,7 @@ class SfgBasicComposer(SfgIComposer):
             You can look at the expression's dependencies:
 
             >>> sorted(expr.depends, key=lambda v: v.name)
-            [x: float, y: float, z: float]
+            [x: float32, y: float32, z: float32]
 
             If you use an existing expression to create a larger one, the new expression
             inherits all variables from its parts:
@@ -421,7 +421,7 @@ class SfgBasicComposer(SfgIComposer):
             >>> expr2
             x + y * z + w
             >>> sorted(expr2.depends, key=lambda v: v.name)
-            [w: float, x: float, y: float, z: float]
+            [w: float32, x: float32, y: float32, z: float32]
 
         """
         return AugExpr.format(fmt, *deps, **kwdeps)