Add newline between includes to fix chapter headers

src/riscv-cheri.adoc

@@ -114,13 +114,21 @@ include::contributors.adoc[]
 ///////////////////////////////////////////////////////////////////////////////
 
 include::introduction.adoc[]
+
 include::cap-description.adoc[]
+
 include::riscv-integration.adoc[]
+
 include::debug-integration.adoc[]
+
 include::cheri-pte-ext.adoc[]
+
 include::riscv-legacy-integration.adoc[]
+
 include::riscv-mode-integration.adoc[]
+
 include::instructions.adoc[]
+
 include::tables.adoc[]
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -129,4 +137,5 @@ include::tables.adoc[]
 
 // The index must precede the bibliography
 include::index.adoc[]
+
 include::bibliography.adoc[]