Remove periods from end of definitions

guidelines/terms/21/single-pointer.html

@@ -1,6 +1,6 @@
 <dt><dfn id="dfn-single-pointer">single pointer</dfn></dt>
 <dd>
-   <p>an input modality that only targets a single point on the page/screen at a time – such as a mouse, single finger on a touch screen, or stylus.</p>
+   <p>an input modality that only targets a single point on the page/screen at a time – such as a mouse, single finger on a touch screen, or stylus</p>
    <p class="note">Single pointer interactions include clicks, double clicks, taps, dragging motions, and single-finger swipe gestures. In contrast, multipoint interactions involve the use of two or more pointers at the same time, such as two-finger interactions on a touchscreen, or the simultaneous use of a mouse and stylus.</p>
 </dd>
 

guidelines/terms/22/perimeter.html

@@ -1,7 +1,7 @@
 <dt class="new"><dfn id="dfn-perimeter">perimeter</dfn></dt>
 <dd class="new">
 	<p class="change">New</p>	
-   <p>continuous line forming the boundary of a shape not including shared pixels, or the <a>minimum bounding box</a>, whichever is shortest.</p>
+   <p>continuous line forming the boundary of a shape not including shared pixels, or the <a>minimum bounding box</a>, whichever is shortest</p>
   <aside class="example"><p>The perimeter calculation for a 2 CSS pixel perimeter around a rectangle is 4<em>h</em>+4<em>w</em>, where <em>h</em> is the height and <em>w</em> is the width. For a 2 CSS pixel perimeter around a circle it is 4𝜋<em>r</em>.</p></aside>
 </dd>