[evince] help: Reword to not depend on a TeXlive package name

[Germán Poo-Caamaño <gpoo src gnome org>]

commit db2d0f8a12191c51ef5b7bd38dff57bc9946fbd0
Author: Germán Poo-Caamaño <gpoo gnome org>
Date:   Thu Jun 28 16:02:22 2018 -0400

    help: Reword to not depend on a TeXlive package name
    
    SyncTeX support depends LaTeX, which is packaged differently by
    distributors.
    
    Closes #461

 help/C/synctex-support.page | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)
---
diff --git a/help/C/synctex-support.page b/help/C/synctex-support.page
index 14cd84cf..837df7cf 100644
--- a/help/C/synctex-support.page
+++ b/help/C/synctex-support.page
@@ -7,10 +7,15 @@
     <desc>How to add support for SyncTeX.</desc>
 
     <revision pkgversion="3.2" version="0.1" date="2011-09-05" status="final"/>
+    <revision pkgversion="3.28" version="0.2" date="2018-06-28" status="final"/>
     <credit type="author">
       <name>Tiffany Antopolski</name>
       <email>tiffany antopolski com</email>
     </credit>
+    <credit type="editor">
+      <name>Germán Poo-Caamaño</name>
+      <email>gpoo gnome org</email>
+    </credit>
     <license>
       <p>Creative Commons Share Alike 3.0</p>
     </license>
@@ -24,12 +29,12 @@ The following packages need to be installed in order to add support for SyncTeX:
 <list>
   <item>
     <p>
-      texlive-extra-utils
+      A LaTeX engine with SyncTex support, such as <app>pdflatex</app>.
     </p>
   </item>
   <item>
     <p>
-      gedit-plugins
+      A text editor with SynxTeX support, such as <app>gedit</app> with gedit-plugins installed.
     </p>
   </item>
 </list>