Update part9c.md

Author: marcbambalan

src/content/9/en/part9c.md

@@ -1094,13 +1094,13 @@ export default toNewDiaryEntry;
 
 > #### A sidenote from the editor
 >
-> <i>If you are like me and hate having a code in broken state for a long time due to incomplete typing, you could star by "faking" the function: </i>
+> <i>If you are like me and hate having a code in broken state for a long time due to incomplete typing, you could start by "faking" the function: </i>
 >
 >
 >```js
 >const toNewDiaryEntry = (object: unknown): NewDiaryEntry => {
 >
->  console.log(object); // now object is no more unused
+>  console.log(object); // now object is no longer unused
 >  const newEntry: NewDiaryEntry = {
 >    weather: 'cloudy', // fake the return value
 >    visibility: 'great',
@@ -1112,7 +1112,7 @@ export default toNewDiaryEntry;
 >};
 >```
 >
-> <i>So before the real data and types are ready to use, I'am just returning here something that has for the sure the right type. The code stays in a operational state all the time and my blood pressure remains in normal level. </i>
+> <i>So before the real data and types are ready to use, I am just returning here something that has for the sure the right type. The code stays in an operational state all the time and my blood pressure remains in normal level. </i>
 
 ### Type guards