[gedit] docs: small update to build.md

[Sébastien Wilmet <swilmet src gnome org>]

commit cafd6bb95c2cacbe301ddb2257bee262e5dbee16
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Tue May 5 00:44:03 2020 +0200

    docs: small update to build.md

 docs/build.md | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)
---
diff --git a/docs/build.md b/docs/build.md
index 5dc6a6595..a95da5e44 100644
--- a/docs/build.md
+++ b/docs/build.md
@@ -59,7 +59,6 @@ JHBuild tips:
 - Try `ignore_suggests = True` in your jhbuildrc to have fewer dependencies to
   build (see the difference with "jhbuild list gedit"). Another solution is to
   put some modules in the skip variable in jhbuildrc.
-- Build also the dconf module to get preferences saved.
 
 Building the gedit module manually
 ----------------------------------
@@ -89,5 +88,5 @@ $ ninja install              # Installation
 
 Just change the above `meson` command by:
 ```
-$ meson --prefix YOUR_PREFIX
+$ meson --prefix /an/other/path
 ```