Remove extra line

Author: Morganov

book/08-customizing-git/sections/attributes.asc

@@ -298,8 +298,7 @@ Now, when you run `git archive` to create a tarball of your project, that direct
 
 ===== `export-subst`
 
-When exporting files for deployment you can apply `git log`'s formatting and keyword-expansion processing to selected portions of files marked with the
-`export-subst` attribute.
+When exporting files for deployment you can apply `git log`'s formatting and keyword-expansion processing to selected portions of files marked with the `export-subst` attribute.
 
 For instance, if you want to include a file named `LAST_COMMIT` in your project, and have metadata about the last commit automatically injected into it when `git archive` runs, you can for example set up your `.gitattributes` and `LAST_COMMIT` files like this: