Update Docs links to new urls

These were still working because of the redirects, but it's better to
point them at the correct addresses in the first place.

tildes/tildes/templates/base.jinja2

@@ -141,8 +141,8 @@
     <li class="site-footer-link"><a href="https://docs.tildes.net/contact">Contact</a></li>
     <li class="site-footer-link"><a href="https://gitlab.com/tildes/tildes">Source code</a></li>
     <li class="site-footer-link"><a href="https://gitlab.com/tildes/tildes/issues">Issues</a> / <a href="https://gitlab.com/tildes/tildes/boards">Roadmap</a></li>
-    <li class="site-footer-link"><a href="https://docs.tildes.net/privacy-policy">Privacy policy</a></li>
-    <li class="site-footer-link"><a href="https://docs.tildes.net/terms-of-use">Terms of use</a></li>
+    <li class="site-footer-link"><a href="https://docs.tildes.net/policies/privacy-policy">Privacy policy</a></li>
+    <li class="site-footer-link"><a href="https://docs.tildes.net/policies/terms-of-use">Terms of use</a></li>
   </ul>
 </footer>
 

tildes/tildes/templates/macros/forms.jinja2

@@ -18,7 +18,7 @@
           >Preview</button>
         </li>
       </menu>
-      <a href="https://docs.tildes.net/text-formatting" target="_blank" tabindex="-1">Formatting help</a>
+      <a href="https://docs.tildes.net/instructions/text-formatting" target="_blank" tabindex="-1">Formatting help</a>
     </header>
     <textarea
       class="form-input"
@@ -36,7 +36,7 @@
   <div class="form-autocomplete form-group" data-js-autocomplete-container data-js-ctrl-enter-submit-form>
     <label class="form-label" for="tags">
       <span>Tags (optional, comma-separated)</span>
-      <a href="https://docs.tildes.net/topic-tagging" target="_blank" tabindex="-1">Tagging help</a>
+      <a href="https://docs.tildes.net/instructions/posting-on-tildes#tagging-topics" target="_blank" tabindex="-1">Tagging help</a>
     </label>
     <div class="form-autocomplete-input form-input">
       <div class="chips" data-js-autocomplete-chips></div>

tildes/tildes/templates/register.jinja2

@@ -43,7 +43,7 @@
     <div class="form-group">
       <label class="form-checkbox">
         <input type="checkbox" id="accepted_terms" name="accepted_terms">
-        <i class="form-icon"></i> I accept the <a href="https://docs.tildes.net/terms-of-use" target="_blank">Terms of Use</a> and <a href="https://docs.tildes.net/privacy-policy" target="_blank">Privacy Policy</a>
+        <i class="form-icon"></i> I accept the <a href="https://docs.tildes.net/policies/terms-of-use" target="_blank">Terms of Use</a> and <a href="https://docs.tildes.net/policies/privacy-policy" target="_blank">Privacy Policy</a>
         <p class="text-small">They're short and written in plain language&mdash;please actually read them!</p>
       </label>
     </div>