Fixing header

Moved top level heading to before preamble.
Set image directory appropriately to obtain title page.

header.adoc

@@ -1,6 +1,3 @@
-= RISC-V Atomic Load-Acquire and Store-Release Extension (Zalasr)
-Author 1; Author 2; RISC-V Task Group
-
 [[header]]
 :description: RISC-V Atomic Load-Acquire and Store-Release Extension (Zalasr)
 :company: RISC-V.org
@@ -12,14 +9,14 @@ Author 1; Author 2; RISC-V Task Group
 :preface-title: Preamble
 :colophon:
 :appendix-caption: Appendix
-:imagesdir: images
+:imagesdir: docs-resources/images
 :title-logo-image: image:risc-v_logo.png[pdfwidth=3.25in,align=center]
 // Settings:
 :experimental:
 :reproducible:
 // needs to be changed? bug discussion started
 //:WaveDromEditorApp: app/wavedrom-editor.app
-:imagesoutdir: images
+:imagesoutdir: docs-resources/images
 :bibtex-file: example.bib
 :bibtex-order: alphabetical
 :bibtex-style: apa
@@ -39,6 +36,8 @@ endif::[]
 :footnote:
 :xrefstyle: short
 
+= RISC-V Atomic Load-Acquire and Store-Release Extension (Zalasr)
+
 // Preamble
 [WARNING]
 .This document is in the link:http://riscv.org/spec-state[Development state]