Merge pull request 'Fix supporter referal links' (#4418) from fix-refer-link into master

Reviewed-on: #4418

build/xslt/fsfe-cd.xsl

@@ -12,8 +12,8 @@
       <xsl:attribute name="type">hidden</xsl:attribute>
       <xsl:attribute name="name">referrer</xsl:attribute>
       <xsl:attribute name="value">
-        <xsl:text>https://fsfe.org</xsl:text>
+        <xsl:text>https://fsfe.org/</xsl:text>
-        <xsl:value-of select="/buildinfo/@filename"/>
+        <xsl:value-of select="substring-after(substring-after(/buildinfo/@filename,'/'),'/')"/>
         <xsl:text>.html</xsl:text>
       </xsl:attribute>
     </xsl:element>
@@ -23,8 +23,8 @@
   <xsl:template match="fsfe-cd-donate-link">
     <xsl:element name="a">
       <xsl:attribute name="href">
-        <xsl:text>https://my.fsfe.org/donate?referrer=https://fsfe.org</xsl:text>
+        <xsl:text>https://my.fsfe.org/donate?referrer=https://fsfe.org/</xsl:text>
-        <xsl:value-of select="/buildinfo/@filename"/>
+        <xsl:value-of select="substring-after(substring-after(/buildinfo/@filename,'/'),'/')"/>
         <xsl:text>.html</xsl:text>
       </xsl:attribute>
       <xsl:apply-templates select="@*|node()"/>