Don't use RFC 2119 keyword in non-normative text

Author: jgraham

index.bs

@@ -10529,7 +10529,7 @@ The [=remote end steps=] given |session| and |command parameters| are:
 1. If, for any reason, the remote end is unable to set the [=selected files=] of |element| to the files with paths given in |files|,
    return error with [=error code=] [=unsupported operation=].
 
-   Note: For example remote ends may be unable to set [=selected files=] to files that do not currently exist on the filesystem.
+   Note: For example remote ends might be unable to set [=selected files=] to files that do not currently exist on the filesystem.
 
 1. Return [=success=] with data null.