Fix typos

Alexander Law

Author: mhagander

doc/src/sgml/ref/pg_receivexlog.sgml

@@ -96,7 +96,7 @@ PostgreSQL documentation
       <term><option>--if-not-exists</option></term>
       <listitem>
        <para>
-        Do not not error out when <option>--create-slot</option> is specified
+        Do not error out when <option>--create-slot</option> is specified
         and a slot with the specified name already exists.
        </para>
       </listitem>

doc/src/sgml/ref/pg_recvlogical.sgml

@@ -158,7 +158,7 @@ PostgreSQL documentation
       <term><option>--if-not-exists</option></term>
       <listitem>
        <para>
-        Do not not error out when <option>--create-slot</option> is specified
+        Do not error out when <option>--create-slot</option> is specified
         and a slot with the specified name already exists.
        </para>
       </listitem>