docs: Reflow long line in manual

diff --git a/doc/MANUAL.adoc b/doc/MANUAL.adoc
index b8f48a6fe0ea9cb91c83a4c3e3b79ec077d4ace7..4ab1ddd3348e2c9aa1f0150449f443377ff4ec20 100644 (file)
--- a/doc/MANUAL.adoc
+++ b/doc/MANUAL.adoc
@@ -1087,9 +1087,9 @@ included in the input hash.
     hash. This is useful if your build system generates different seeds between
     builds and you are OK with reusing cached results.
 *system_headers*::
-    Only check non-system headers in direct mode.
-    This can be useful if e.g. your system headers tend to change but you know that
-    the changes don't matter. Notes:
+    Only check non-system headers in direct mode. This can be useful if e.g.
+    your system headers tend to change but you know that the changes don't
+    matter. Notes:
 +
 * This sloppiness is only supported for GCC-like compilers, not MSVC.
 * System headers are still taken into account for preprocessed lookup.