Fix typos.

Author: davidlehn

spec/latest/common/terms.html

@@ -88,7 +88,7 @@ <h1>General Terminology</h1>
       When executing an algorithm, the graph where data should be placed
       if a <a>named graph</a> is not specified.</dd>
     <dt><dfn>default language</dfn></dt><dd>
-      The default language is set in the <a>context</a> using the <code>@language</code> key who's
+      The default language is set in the <a>context</a> using the <code>@language</code> key whose
       value MUST be a <a>string</a> representing a [[!BCP47]] language code or <a>null</a>.</dd>
     <dt><dfn>default object</dfn></dt><dd>
       A <a>default object</a> is a <a>JSON object</a> that has a <code>@default</code> member.</dd>
@@ -112,7 +112,7 @@ <h1>General Terminology</h1>
       The <a>IRI</a> identifying a <a>named graph</a>.</dd>
     <dt><dfn data-lt="index maps">index map</dfn></dt><dd>
       An <a>index map</a> is a <a>JSON object</a> value of a <a>term</a> defined with
-      <code>@container</code> set to <code>@index</code>, who's values MUST be any of the following types:
+      <code>@container</code> set to <code>@index</code>, whose values MUST be any of the following types:
         <a>string</a>,
         <a>number</a>,
         <a>true</a>,
@@ -139,7 +139,7 @@ <h1>General Terminology</h1>
       in the section titled <cite><a href="http://www.w3.org/TR/json-ld/#syntax-tokens-and-keywords">Syntax Tokens and Keywords</a></cite>.</dd>
     <dt><dfn data-lt="language maps">language map</dfn></dt><dd>
       An <a>language map</a> is a <a>JSON object</a> value of a <a>term</a> defined with
-      <code>@container</code> set to <code>@language</code>, who's keys MUST be <a>strings</a> representing
+      <code>@container</code> set to <code>@language</code>, whose keys MUST be <a>strings</a> representing
       [[!BCP47]] language codes and the values MUST be any of the following types:
         <a>null</a>,
         <a>string</a>, or
@@ -255,7 +255,7 @@ <h1>General Terminology</h1>
       A <a>value object</a> is a <a>JSON object</a> that has an <code>@value</code>
       member.</dd>
     <dt><dfn>vocabulary mapping</dfn></dt><dd>
-      The vocabulary mapping is set in the <a>context</a> using the <code>@vocab</code> key who's
+      The vocabulary mapping is set in the <a>context</a> using the <code>@vocab</code> key whose
       value MUST be an <a>absolute IRI</a> <a>null</a>.</dd>
   </dl>
 </section>