Fix typo: OEAP → OAEP (#5183)

Author: mmalferov

reference/openssl/functions/openssl-private-decrypt.xml

@@ -70,7 +70,7 @@
      <term><parameter>digest_algo</parameter></term>
      <listitem>
       <simpara>
-       The digest algorithm for OEAP padding, or &null; to use the default algorithm.
+       The digest algorithm for OAEP padding, or &null; to use the default algorithm.
       </simpara>
      </listitem>
     </varlistentry>

reference/openssl/functions/openssl-public-encrypt.xml

@@ -73,7 +73,7 @@
      <term><parameter>digest_algo</parameter></term>
      <listitem>
       <simpara>
-       The digest algorithm for OEAP padding, or &null; to use the default algorithm.
+       The digest algorithm for OAEP padding, or &null; to use the default algorithm.
       </simpara>
      </listitem>
     </varlistentry>