docs: fix typo in SSL functions

CLA: trivial
Reviewed-by: NMatthias St. Pierre <Matthias.St.Pierre@ncp-e.com>
Reviewed-by: NPaul Yang <kaishen.yy@antfin.com>
Reviewed-by: NTomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/11253)

(cherry picked from commit 9f44e96e245993c8e7aaa9fadf1d6713c9c60915)

doc/man3/SSL_accept.pod

@@ -56,7 +56,7 @@ established.
 
 The TLS/SSL handshake was not successful because a fatal error occurred either
 at the protocol level or a connection failure occurred. The shutdown was
-not clean. It can also occur of action is need to continue the operation
+not clean. It can also occur if action is needed to continue the operation
 for non-blocking BIOs. Call SSL_get_error() with the return value B<ret>
 to find out the reason.
 
@@ -72,7 +72,7 @@ L<SSL_CTX_new(3)>
 
 =head1 COPYRIGHT
 
-Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.
+Copyright 2000-2020 The OpenSSL Project Authors. All Rights Reserved.
 
 Licensed under the OpenSSL license (the "License").  You may not use
 this file except in compliance with the License.  You can obtain a copy

doc/man3/SSL_connect.pod

@@ -71,7 +71,7 @@ established.
 
 The TLS/SSL handshake was not successful, because a fatal error occurred either
 at the protocol level or a connection failure occurred. The shutdown was
-not clean. It can also occur of action is need to continue the operation
+not clean. It can also occur if action is needed to continue the operation
 for non-blocking BIOs. Call SSL_get_error() with the return value B<ret>
 to find out the reason.
 
@@ -87,7 +87,7 @@ L<SSL_CTX_new(3)>
 
 =head1 COPYRIGHT
 
-Copyright 2000-2018 The OpenSSL Project Authors. All Rights Reserved.
+Copyright 2000-2020 The OpenSSL Project Authors. All Rights Reserved.
 
 Licensed under the OpenSSL license (the "License").  You may not use
 this file except in compliance with the License.  You can obtain a copy

doc/man3/SSL_do_handshake.pod

@@ -57,7 +57,7 @@ established.
 
 The TLS/SSL handshake was not successful because a fatal error occurred either
 at the protocol level or a connection failure occurred. The shutdown was
-not clean. It can also occur of action is need to continue the operation
+not clean. It can also occur if action is needed to continue the operation
 for non-blocking BIOs. Call SSL_get_error() with the return value B<ret>
 to find out the reason.
 
@@ -71,7 +71,7 @@ L<SSL_set_connect_state(3)>
 
 =head1 COPYRIGHT
 
-Copyright 2002-2016 The OpenSSL Project Authors. All Rights Reserved.
+Copyright 2002-2020 The OpenSSL Project Authors. All Rights Reserved.
 
 Licensed under the OpenSSL license (the "License").  You may not use
 this file except in compliance with the License.  You can obtain a copy