Instruction.md: fix typo (#707)

instructions/Instruction.md

@@ -44,7 +44,7 @@ It is possible to override this, by adding arguments when opening app e.g. `czka
 
 When using additional command line arguments, saving at exit option become disabled, so this current info about directories will not be saved until user save it manually.
 
-Both relative and absolute path are supported, so used can use both `../home` and `/home`.
+Both relative and absolute path are supported, so user can use both `../home` and `/home`.
 
 ## CLI
 Czkawka CLI frontend is great to automate some tasks like removing empty directories.
@@ -271,4 +271,4 @@ It works in this way:
 - Takes mime type(may return more than 1) from extension e.g. `Mime::Archive`
 - Returns all file extensions that are connected to this mime type e.g. `rar,7z,zip,p7`
 - Basing on file extension, adds more elements to list from above(needed because some files e.g. `exe` and `dll` begins with similar/same bytes)
-- If current file extensions is inside list then probably have proper extension, if is not inside, then is shown as file with invalid extension
+- If current file extensions is inside list then probably have proper extension, if is not inside, then is shown as file with invalid extension