Wrap 80 columns

Author: phungleson

reference.md

@@ -2767,9 +2767,13 @@ Point3d {y: 0, z: 10, .. base};
 
 #### Struct field init shorthand
 
-When initializing a data structure (struct, enum, union) with named fields, allow writing `fieldname` as a shorthand for `fieldname: fieldname`. This allows a compact syntax for initialization, with less duplication.
+When initializing a data structure (struct, enum, union) with named fields,
+allow writing `fieldname` as a shorthand for `fieldname: fieldname`. This
+allows a compact syntax for initialization, with less duplication.
 
-In the initializer for a `struct` with named fields, a `union` with named fields, or an enum variant with named fields, accept an identifier `field` as a shorthand for `field: field`.
+In the initializer for a `struct` with named fields, a `union` with named
+fields, or an enum variant with named fields, accept an identifier `field` as a
+shorthand for `field: field`.
 
 Example: