[css-exclusions] fix typo

Author: astearns

css-exclusions/Exclusions.src.html

@@ -1010,7 +1010,7 @@ <h3 id="floats-and-exclusions">Floats and exclusions</h3>
 
     <h4 id="floats-and-exclusions-similarities">Similarities</h4>
 
-    <p>There are similarities between floats an exclusions in that inline content wraps around floats 
+    <p>There are similarities between floats and exclusions in that inline content wraps around floats 
         and also wraps around <span>exclusion areas</span>. However, there are very significant differences.</p>
 
     <h4 id="floats-and-exclusions-differences">Differences</h4>

css-exclusions/Overview.html

@@ -1391,7 +1391,7 @@ <h3 id=floats-and-exclusions><span class=secno>3.6. </span>Floats and
   <h4 id=floats-and-exclusions-similarities><span class=secno>3.6.1.
    </span>Similarities</h4>
 
-  <p>There are similarities between floats an exclusions in that inline
+  <p>There are similarities between floats and exclusions in that inline
    content wraps around floats and also wraps around <a
    href="#exclusion-area">exclusion areas</a>. However, there are very
    significant differences.