Fix Broken Docs References (#5436)

docs/templates/contract.hbs

@@ -2,6 +2,10 @@
 :{{name}}: pass:normal[xref:#{{anchor}}[`++{{name}}++`]]
 {{/each}}
 
+{{#each functions}}
+:{{fullname}}: pass:normal[xref:#{{anchor}}[`++{{name}}++`]]
+{{/each}}
+
 [.contract]
 [[{{anchor}}]]
 === `++{{name}}++` link:https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v{{oz-version}}/{{__item_context.file.absolutePath}}[{github-icon},role=heading-link]

docs/templates/properties.js

@@ -17,6 +17,22 @@ module.exports.anchor = function anchor({ item, contract }) {
   return res;
 };
 
+module.exports.fullname = function fullname({ item }) {
+  let res = '';
+  res += item.name;
+  if ('parameters' in item) {
+    const signature = item.parameters.parameters.map(v => v.typeName.typeDescriptions.typeString).join(',');
+    res += slug('(' + signature + ')');
+  }
+  if (isNodeType('VariableDeclaration', item)) {
+    res += '-' + slug(item.typeName.typeDescriptions.typeString);
+  }
+  if (res.charAt(res.length - 1) === '-') {
+    return res.slice(0, -1);
+  }
+  return res;
+};
+
 module.exports.inheritance = function ({ item, build }) {
   if (!isNodeType('ContractDefinition', item)) {
     throw new Error('used inherited-items on non-contract');