fix: remove wrapping for sentence

Author: LeoBorai

src/doc/src/reference/manifest.md

@@ -73,8 +73,7 @@ The package name is an identifier used to refer to the package. It is used
 when listed as a dependency in another package, and as the default name of
 inferred lib and bin targets.
 
-The name must use only [alphanumeric] characters or `-` or `_`, and cannot be
-empty.
+The name must use only [alphanumeric] characters or `-` or `_`, and cannot be empty.
 
 Note that [`cargo new`] and [`cargo init`] impose some additional restrictions on
 the package name, such as enforcing that it is a valid Rust identifier and not