docs(find-files): explain what everything means and all files in the exercise Instructions

subjects/devops/find-files/README.md

@@ -6,8 +6,8 @@
 
 Create a file `find-files.sh`, which will look for and show, in the current directory and its sub-folders:
 
-everything that starts with an `a` or,
-all the files ending with a `z`
+everything (Regular file, Directory file, Link file,...) that starts with an `a` or, 
+all Regular file ending with a `z`
 
 
 - You can use this for testing: https://assets.01-edu.org/devops-branch/find-files-example.zip
@@ -47,4 +47,4 @@ You may need to use pipes `(|)` and the logical operator `&&`.
 
 
 > You have to use Man or Google to know more about commands flags, in order to solve this exercise!
-> Google and Man will be your friends!
+> Google and Man will be your friends!