Update learners/setup.md

Updated following review

Co-authored-by: Dimitrios Theodorakis <[email protected]>

learners/setup.md

@@ -48,7 +48,7 @@ While Fortran files are plain text and can be edited with any plain text editor,
 
 ### Emacs
 
-[Emacs][emacs-link] is a cross-platform text editor available for Linux, MacOS, and Windows. It will contain syntax highlighting for many Fortran file, but additional file extensions, such as `.X90`  may be valid Fortran files but will not be picked up in Emacs _f90-mode_. This mode allows for tab-completion of Fortran statements and the addition of a drop-down menu that provides additional Fortran-related options.
+[Emacs][emacs-link] is a cross-platform text editor available for Linux, MacOS, and Windows. Emacs applies syntax highlighting for most Fortran files, but additional file extensions, such as `.X90`  may be valid Fortran files but will not be picked up in Emacs _f90-mode_. This mode allows for tab-completion of Fortran statements and the addition of a drop-down menu that provides additional Fortran-related options.
 
 Files can be manually set to f90-mode using `M-x f90-mode`, but file extensions can be added to your [Emacs initialization file][emacs-init-link] to ensure that these are recognised when opened. The format for this is
 ```lisp