Apply suggestions from code review

Author: eopb

src/hir-debugging.md

@@ -2,10 +2,12 @@
 
 Use the `-Z unpretty=hir` flag to produce a human-readable representation of the HIR.
 For cargo projects this can be done with `cargo rustc -- -Z unpretty=hir`.
-This output is useful when you need to see at a glance how your code was desugared and transformed during AST lowering.
+This output is useful when you need to see at a glance how your code was desugared and transformed
+during AST lowering.
 
 For a full `Debug` dump of the data in the HIR, use the `-Z unpretty=hir-tree` flag.
-This may be useful when you need to see the full structure of the HIR from the perspective of the compiler.
+This may be useful when you need to see the full structure of the HIR from the perspective of the
+compiler.
 
 If you are trying to correlate `NodeId`s or `DefId`s with source code, the
 `-Z unpretty=expanded,identified` flag may be useful.