Fix some typos and damage in the documentation.

common/locale/en-US/browsing.xml

@@ -374,7 +374,7 @@ want to bypass &dactyl.appName;'s key handling and pass keys directly to
         </p>
         <warning>
             Not all plugins are designed to cleanly un-apply during a rehash.
-            While official plugins are safe, beware of possibility instability
+            While official plugins are safe, beware of possible instability
             if you rehash while running third-party plugins.
         </warning>
     </description>

common/locale/en-US/options.xml

@@ -99,7 +99,7 @@
 </p>
 <p>
     Any substring enclosed by <em>&lt;{</em> and <em>}></em> is automatically
-    elided if any of the contained macros characters aren't currently valid. A
+    elided if any of the contained macros aren't currently valid. A
     literal <em>&lt;</em> or <em>></em> character may be included with the
     special escape sequences <em>&lt;lt></em> or <em>&lt;gt></em> respectively.
 </p>
@@ -1371,7 +1371,7 @@
 
         <p>Possible values are:</p>
 
-        <dl dt="width: 6em;">
+        <dl>
             <dt></dt> <dd>Don't show link destination</dd>
             <dt>status</dt> <dd>Show the link destination in the &tag.status-line;</dd>
             <dt>command</dt> <dd>Show the link destination in the &tag.command-line;</dd>
@@ -1395,24 +1395,6 @@
     </description>
 </item>
 
-</item>
-
-
-    <type>number</type>
-    <default>2</default>
-    <description>
-        <p>Controls when the tab line is shown.</p>
-
-        <p>Possible values are:</p>
-
-        <dl dt="width: 6em;">
-            <dt>0</dt>      <dd>Never show tab line</dd>
-            <dt>1</dt>      <dd>Show tab line only if more than one tab is open</dd>
-            <dt>2</dt>      <dd>Always show tab line</dd>
-        </dl>
-    </description>
-</item>
-
 <item>
     <tags>'nosf' 'nostrictfocus'</tags>
     <tags>'sf' 'strictfocus'</tags>