[PATCH] docs: replace 'Edit on GitLab' with 'View page source'

[Daniel P . Berrangé]

QEMU takes contributions via the mailing list, so while you can edit a
file on gitlab and then switch to the terminal to send a patch, the
wording 'Edit on GitLab' strongly suggests we take merge requests.

Switching back to "View page source" is a more agnostic term that does
not imply a particular contribution approach, that we had used in QEMU
before:

  commit 73e6aec6522e1edd63f631c52577b49a39bc234f
  Author: Marc-André Lureau <marcandre.lureau@redhat.com>
  Date:   Tue Mar 23 15:53:28 2021 +0400

    sphinx: adopt kernel readthedoc theme

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
---
 docs/conf.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docs/conf.py b/docs/conf.py
index c11a6ead8a..164a8ee8b2 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -186,7 +186,7 @@
 ]
 
 html_context = {
-    "display_gitlab": True,
+    "source_url_prefix": 
"https://gitlab.com/qemu-project/qemu/-/blob/master/docs/";,
     "gitlab_user": "qemu-project",
     "gitlab_repo": "qemu",
     "gitlab_version": "master",
-- 
2.46.0