fix a typo

doc/devel/draw/PlayerArch-1.svg

@@ -25,8 +25,8 @@
      inkscape:pageopacity="0.0"
      inkscape:pageshadow="2"
      inkscape:zoom="2"
-     inkscape:cx="426.20838"
-     inkscape:cy="310.01992"
+     inkscape:cx="419.63217"
+     inkscape:cy="331.20952"
      inkscape:document-units="px"
      inkscape:current-layer="svg2"
      inkscape:window-width="1668"
@@ -798,7 +798,7 @@
        y="420"
        x="310"
        id="tspan2441"
-       sodipodi:role="line">PlayerImpl</tspan></text>
+       sodipodi:role="line">ProcessImpl</tspan></text>
   <path
      sodipodi:nodetypes="ccc"
      id="path2443"
@@ -914,4 +914,11 @@
        x="171.12164"
        y="130"
        style="font-size:8px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:start;line-height:100%;writing-mode:lr-tb;text-anchor:start;font-family:Bitstream Vera Sans">attach_viewer()</tspan></text>
+  <rect
+     style="opacity:1;color:#000000;fill:none;fill-opacity:0.75;fill-rule:evenodd;stroke:none;stroke-width:1.5;stroke-linecap:butt;stroke-linejoin:miter;marker:none;marker-start:none;marker-mid:none;marker-end:none;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1;visibility:visible;display:inline;overflow:visible;enable-background:accumulate"
+     id="rect_Canvas"
+     width="740"
+     height="460"
+     x="40"
+     y="70" />
 </svg>