Make syntax highlighting explicit in docs

src/ifcopenshell-python/ifcopenshell/api/classification/add_classification.py

@@ -62,7 +62,9 @@ class Usecase:
         :return: The added IfcClassification element
         :rtype: ifcopenshell.entity_instance.entity_instance
 
-        Example::
+        Example:
+
+        .. code:: python
 
             # Option 1: adding a custom clasification from scratch
             ifcopenshell.api.run("classification.add_classification", model,

src/ifcopenshell-python/ifcopenshell/api/classification/add_reference.py

@@ -84,7 +84,9 @@ class Usecase:
         :return: The newly added IfcClassificationReference
         :rtype: ifcopenshell.entity_instance.entity_instance
 
-        Example::
+        Example:
+
+        .. code:: python
 
             # Option 1: adding and assigning a new reference from scratch
             wall_type = model.by_type("IfcWallType")[0]

src/ifcopenshell-python/ifcopenshell/api/classification/edit_classification.py

@@ -31,7 +31,9 @@ class Usecase:
         :return: None
         :rtype: None
 
-        Example::
+        Example:
+
+        .. code:: python
 
             classification = model.by_type("IfcClassification")[0]
             # Change the name of the classification system to "Foo"

src/ifcopenshell-python/ifcopenshell/api/classification/edit_reference.py

@@ -31,7 +31,9 @@ class Usecase:
         :return: None
         :rtype: None
 
-        Example::
+        Example:
+
+        .. code:: python
 
             reference = model.by_type("IfcClassification")[0]
             # Change the name of the reference to "Foo"

src/ifcopenshell-python/ifcopenshell/api/classification/remove_classification.py

@@ -30,7 +30,9 @@ class Usecase:
         :return: None
         :rtype: None
 
-        Example::
+        Example:
+
+        .. code:: python
 
             classification = model.by_type("IfcClassification")[0]
             ifcopenshell.api.run("classification.remove_classification", model,

src/ifcopenshell-python/ifcopenshell/api/classification/remove_reference.py

@@ -33,7 +33,9 @@ class Usecase:
         :return: None
         :rtype: None
 
-        Example::
+        Example:
+
+        .. code:: python
 
             wall_type = model.by_type("IfcWallType")[0]
             classification = ifcopenshell.api.run("classification.add_classification",