Fix documents and a clippy warning

guide/src/class.md

@@ -87,7 +87,7 @@ pyo3::inventory::collect!(MyClassGeneratedPyo3Inventory);
 
 
 ## Get Python objects from `pyclass`
-You sometimes need to convert your pyclass into Python object in Rust code(e.g., for testing it).
+You sometimes need to convert your `pyclass` into a Python object in Rust code (e.g., for testing it).
 
 You can use `PyClassShell<T>` or `Py<T>` for this purpose.
 
@@ -95,8 +95,8 @@ You can use `PyClassShell<T>` or `Py<T>` for this purpose.
 
 `PyClassShell` is a special type made for `PyClass`.
 
-It represents the actual layout of pyclass in Python world and used to extract it from
-Python object pointer.
+It represents the actual layout of `pyclass` on the Python heap and is used to extract it from
+the Python object pointer.
 
 To make pyclass in Python heap, you can use `PyClassShell::new_ref` or `PyClassShell::new_mut`.
 

src/pyclass.rs

@@ -371,7 +371,7 @@ impl<T: PyTypeInfo> PyClassInitializer<T> {
         }
         let super_init = Box::into_raw(Box::new(PyClassInitializer::new()));
         self.super_init = Some(super_init);
-        return unsafe { &mut *super_init };
+        unsafe { &mut *super_init }
     }
 
     #[doc(hidden)]

src/pyclass_slots.rs

@@ -37,7 +37,7 @@ impl PyClassWeakRef for PyClassDummySlot {
     }
 }
 
-/// actural dict field
+/// actual dict field
 #[repr(transparent)]
 pub struct PyClassDictSlot(*mut ffi::PyObject);
 
@@ -54,7 +54,7 @@ impl PyClassDict for PyClassDictSlot {
     }
 }
 
-/// actural weakref field
+/// actual weakref field
 #[repr(transparent)]
 pub struct PyClassWeakRefSlot(*mut ffi::PyObject);