Rework some grammar conditionals

Author: t0p0lin0

_config.yml

@@ -43,7 +43,7 @@ defaults:
       has_search: yes
       has_nav: yes
       has_ticker: yes
-      list_of: "merchants"
+      list_of: "merchant"
       encoded_img_placeholder: "data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs="
       img_placeholder: "/img/placeholder.png"
 

_includes/header.html

@@ -31,7 +31,7 @@ <h1>the <span class="logoseg-1">Accept</span><br><span class="logoseg-2">Bitcoin
 
     <div class="inner-title">
       <div class="sub header">
-        <p>A community-curated list of <b>{{ page.list_of }} that accept <a href="https://bitcoincash.org" data-tooltip="Learn about Bitcoin Cash" data-position="top center">Bitcoin Cash</a></b>, a peer-to-peer electronic cash system{% if page.id == 'donation-listings' %}, for donations{% endif %}.</p>
+        <p>A community-curated list of <b>{{ page.list_of }}{% if page.id == 'donation-listings' or 'adult-listings' %}s{% endif %} that accept <a href="https://bitcoincash.org" data-tooltip="Learn about Bitcoin Cash" data-position="top center">Bitcoin Cash</a></b>, a peer-to-peer electronic cash system{% if page.id == 'donation-listings' %}, for donations{% endif %}.</p>
       </div>
       {%- if page.has_search -%}
       <i class="btc icon"></i>

donations.html

@@ -4,7 +4,7 @@
 
 id: donation-listings
 page_name: donations
-list_of: "organizations"
+list_of: "organization"
 email_subject: Please%20consider%20accepting%20Bitcoin%20Cash%20donations
 workonit_tweet: "Please consider accepting #BitcoinCash for donations @TWITTERHANDLE - it’s \"Peer-to-Peer Electronic Cash\" that is fast, reliable, and secure, with low fees. More @"
 ---