Fix typos in using.xml

diff --git a/docs/users_guide/using.xml b/docs/users_guide/using.xml
index 96d3c73..8fa2434 100644 (file)
--- a/docs/users_guide/using.xml
+++ b/docs/users_guide/using.xml
@@ -1547,7 +1547,7 @@ f "2"    = 2
          <indexterm><primary>unused do binding, warning</primary></indexterm>
          <indexterm><primary>do binding, unused</primary></indexterm>
 
-         <para>Report expressions occuring in <literal>do</literal> and <literal>mdo</literal> blocks
+         <para>Report expressions occurring in <literal>do</literal> and <literal>mdo</literal> blocks
          that appear to silently throw information away.
           For instance <literal>do { mapM popInt xs ; return 10 }</literal> would report
           the first statement in the <literal>do</literal> block as suspicious,
@@ -1572,7 +1572,7 @@ f "2"    = 2
          <indexterm><primary>apparently erroneous do binding, warning</primary></indexterm>
          <indexterm><primary>do binding, apparently erroneous</primary></indexterm>
 
-         <para>Report expressions occuring in <literal>do</literal> and <literal>mdo</literal> blocks
+         <para>Report expressions occurring in <literal>do</literal> and <literal>mdo</literal> blocks
          that appear to lack a binding.
           For instance <literal>do { return (popInt 10) ; return 10 }</literal> would report
           the first statement in the <literal>do</literal> block as suspicious,