Backpatch some blatant spelling mistakes

doc/src/sgml/docguide.sgml

@@ -1,4 +1,4 @@
-<!-- $PostgreSQL: pgsql/doc/src/sgml/docguide.sgml,v 1.72 2007/12/28 11:13:55 petere Exp $ -->
+<!-- $PostgreSQL: pgsql/doc/src/sgml/docguide.sgml,v 1.72.2.1 2010/08/17 04:49:32 petere Exp $ -->
 
 <appendix id="docguide">
  <title>Documentation</title>
@@ -227,7 +227,7 @@
    <para>
     It's possible that the ports do not update the main catalog file
     in <filename>/usr/local/share/sgml/catalog.ports</filename> or order 
-    isn't proper .  Be sure to have the following lines in begining of file:
+    isn't proper .  Be sure to have the following lines in beginning of file:
 <programlisting>
 CATALOG "openjade/catalog"
 CATALOG "iso8879/catalog"

doc/src/sgml/earthdistance.sgml

@@ -1,4 +1,4 @@
-<!-- $PostgreSQL: pgsql/doc/src/sgml/earthdistance.sgml,v 1.3 2007/12/06 04:12:10 tgl Exp $ -->
+<!-- $PostgreSQL: pgsql/doc/src/sgml/earthdistance.sgml,v 1.3.2.1 2010/08/17 04:49:32 petere Exp $ -->
 
 <sect1 id="earthdistance">
  <title>earthdistance</title>
@@ -38,7 +38,7 @@
    The radius of the Earth is obtained from the <function>earth()</>
    function. It is given in meters. But by changing this one function you can
    change the module to use some other units, or to use a different value of
-   the radius that you feel is more appropiate.
+   the radius that you feel is more appropriate.
   </para>
 
   <para>