Update Eeschema BOM dialog html help text

Now links to relevant section in stable eeschema docs.

Fixes: lp:1798248
https://bugs.launchpad.net/kicad/+bug/1798248

eeschema/dialogs/dialog_bom_help.html

@@ -43,8 +43,8 @@ Full documentation:</h1>
 <p lang="en-US" class="western" style="margin-bottom: 0cm; widows: 0; orphans: 0">
 <font face="Times New Roman, serif"><font size="3" style="font-size: 12pt"><span style="font-weight: normal">The
 </span><i><b>Eeschema documentation</b></i> <span style="font-weight: normal">describes
-this </span><b>intermediate netlist and gives examples<br></b><span style="font-weight: normal">See
-also </span><i><b>https://answers.launchpad.net/kicad/+faq/2265</b></i></font></font></p>
+this </span><b>intermediate netlist and gives examples<br></b><span style="font-weight: normal">See </span>
+<i><b>http://docs.kicad-pcb.org/stable/en/eeschema.html#creating-customized-netlists-and-bom-files</b></i></font></font></p>
 <h1 class="western"><i>2 - </i>The intermediate Netlist File</h1>
 <p lang="en-US" class="western" style="margin-bottom: 0cm; widows: 0; orphans: 0; page-break-before: auto; page-break-after: auto">
 <font face="Times New Roman, serif"><font size="3" style="font-size: 12pt">BOM