Merge pull request #2568 from hbaklan943/patch-1

fixed typos

Author: mluukkai

src/content/3/en/part3c.md

@@ -905,11 +905,11 @@ Full stack development is <i> extremely hard</i>, that is why I will use all the
 
 - I will have my browser developer console open all the time
 - I will use the network tab of the browser dev tools to ensure that frontend and backend are communicating as I expect
-- I will constantly keep on eye the state of the server to make sure that the data sent there by the frontend is saved there as I expect
+- I will constantly keep an eye on the state of the server to make sure that the data sent there by the frontend is saved there as I expect
 - <i>I will keep an eye on the database: does the backend save data there in the right format</i>
 - I progress with small steps
 - I will write lots of _console.log_ statements to make sure I understand how the code behaves and to help pinpoint problems
-- If my code does not work, I will not write more code. Instead, I start deleting the code until it works or just return to a state when everything still was still working
+- If my code does not work, I will not write more code. Instead, I start deleting the code until it works or just return to a state when everything was still working
 - When I ask for help in the course Discord or Telegram channel or elsewhere I formulate my questions properly, see [here](https://fullstackopen.com/en/part0/general_info#how-to-ask-help-in-discord-telegam) how to ask for help
 
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