fix readmes

Author: nasdan

05-testing/01-react/01-base/02-calculator/README.md

@@ -78,6 +78,9 @@ _./src/calculator.spec.ts_
   - It should have same fields, even undefined values.
   - We should use `toEqual` if we don't care about it.
 
+
+## Spy
+
 Now, we need passing a method as parameter, whatever it is, we only want to check that it was called and with which arguments:
 
 _./src/calculator.ts_
@@ -96,8 +99,6 @@ _./src/calculator.ts_
 
 ```
 
-## Spy
-
 How we could test it? Using a `spy`:
 
 _./src/calculator.spec.ts_

05-testing/01-react/01-base/04-tdd/README.md

@@ -316,9 +316,11 @@ _./src/mapper.spec.ts_
 ...
 
 describe('mapper specs', () => {
-+ it.each<apiModel.Member[]>([undefined, null, []])(
-+   'should return empty array when it feeds members equals %p',
-+   (members: any) => {
++ it.each<{ members: apiModel.Member[] }>([
++   { members: undefined },
++   { members: null },
++   { members: [] },
++ ])('should return empty array when it feeds $members', ({ members }) => {
 +     // Arrange
 
 +     // Act