fix references to src module

Author: lundybernard

docs/pages/principles/testing.md

@@ -440,15 +440,15 @@ When patches and imports are both used in a test case, the patch only applies to
 the specific context in which it is called, and does not override the import
 used elsewhere in the test file. In the following example:
 
-- You import `dangerous_sideffects` from src.lib, then patch
-  `src.lib.dangerous_sideffects`. If your source code calls
+- You import `dangerous_sideffects` from project.lib, then patch
+  `project.lib.dangerous_sideffects`. If your source code calls
   `dangerous_sideffects` (when you run `say_hello`) it will use the Mock
   provided by the patch. But if your test case calls `dangerous_sideffects`, it
   will not use the Mock, and instead will execute the function
 - The behavior is the same when using stdlib.mock.patch, and pytest-mocker
 
 ```python
-# src.lib
+# project.lib
 def dangerous_sideffects():
     raise RuntimeError("BOOM")
 
@@ -459,12 +459,12 @@ def say_hello():
 ```
 
 ```python
-from src.lib import say_hello, dangerous_sideffects
+from project.lib import say_hello, dangerous_sideffects
 
 
 def test_pytest(mocker):
     # Given this context
-    mock_dangerous_sideffects = mocker.patch("src.lib.dangerous_sideffects")
+    mock_dangerous_sideffects = mocker.patch("project.lib.dangerous_sideffects")
     # When we run the code
     ret = say_hello()
     # Then we expect the result