Use backticks to format file reference (#35469)

Co-authored-by: Alex Nguyen <[email protected]>

Author: annegentle

content/pull-requests/collaborating-with-pull-requests/addressing-merge-conflicts/resolving-a-merge-conflict-using-the-command-line.md

@@ -24,7 +24,7 @@ Merge conflicts occur when competing changes are made to the same line of a file
 
 To resolve a merge conflict caused by competing line changes, you must choose which changes to incorporate from the different branches in a new commit.
 
-For example, if you and another person both edited the file _styleguide.md_ on the same lines in different branches of the same Git repository, you'll get a merge conflict error when you try to merge these branches. You must resolve this merge conflict with a new commit before you can merge these branches.
+For example, if you and another person both edited the file `styleguide.md` on the same lines in different branches of the same Git repository, you'll get a merge conflict error when you try to merge these branches. You must resolve this merge conflict with a new commit before you can merge these branches.
 
 {% data reusables.command_line.open_the_multi_os_terminal %}
 1. Navigate into the local Git repository that has the merge conflict.