Update caesarCipher.md

snippets/caesarCipher.md

@@ -7,7 +7,7 @@ Encrypts or decrypts a given string using the Caesar cipher.
 
 - Use the modulo (`%`) operator and the ternary operator (`?`) to calculate the correct encryption/decryption key.
 - Use the spread operator (`...`) and `Array.prototype.map()` to iterate over the letters of the given string.
-- Use `String.prototype.charCodeAt()` and `String.fromCharCode()` to convert each letter appropriately, ignoring special characters, spaces et.c
+- Use `String.prototype.charCodeAt()` and `String.fromCharCode()` to convert each letter appropriately, ignoring special characters, spaces etc.
 - Use `Array.prototype.join()` to combine all the letters into a string.
 - Pass `true` to the last parameter, `decrypt`, to decrypt an encrypted string.