Update README.md

2024/Day04/README.md

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 ## --- Day 4: Ceres Search ---
 "Looks like the Chief's not here. Next!" One of The Historians pulls out a device and pushes the only button on it. After a brief flash, you recognize the interior of the __Ceres monitoring station__!
-As the search for the Chief continues, a small Elf who lives on the station tugs on your shirt; she'd like to know if you could help her with her <em>word search</em> (your puzzle input). She only has to find one word: <code>XMAS</code>.
+As the search for the Chief continues, a small Elf who lives on the station tugs on your shirt; she'd like to know if you could help her with her <em>word search</em>. She only has to find one word: <code>XMAS</code>.
 
 Read the [full puzzle](https://adventofcode.com/2024/day/4).
 
-I used my proven tactic and converted the input to a Dictionary keyed by coordinates. It's easy to iterate over the keys and checking if we are in the bounds of the map as well.
+I employed my proven tactic of converting the input into a dictionary, using coordinates as keys. This approach makes it straightforward to iterate over the keys and check whether they fall within the bounds of the map.
 
-Representing the coordinates with Complex numbers is also a useful way to deal with stepping in various directions.
+Representing coordinates with complex numbers is another effective technique for handling steps in various directions.
 
-The algorithm itself is simply a bruteforce check of all starting positions and reading orders.
+The algorithm itself is a straightforward brute-force check of all starting positions and reading orders.