doc change - Add new external dialect for openGauss

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### Description
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Added new external dialect for [openGauss](https://www.opengauss.org/en/).

### Checklist
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This pull request is:

- [x] A documentation / typographical error fix
	- Good to go, no issue or tests are needed
- [ ] A short code fix
	- please include the issue number, and create an issue if none exists, which
	  must include a complete example of the issue.  one line code fixes without an
	  issue and demonstration will not be accepted.
	- Please include: `Fixes: #<issue number>` in the commit message
	- please include tests.   one line code fixes without tests will not be accepted.
- [ ] A new feature implementation
	- please include the issue number, and create an issue if none exists, which must
	  include a complete example of how the feature would look.
	- Please include: `Fixes: #<issue number>` in the commit message
	- please include tests.

**Have a nice day!**

Closes: #8803
Pull-request: https://github.com/sqlalchemy/sqlalchemy/pull/8803
Pull-request-sha: ca5a7f1310b2ce93ce33618e0609abe23b41a3da

Change-Id: Ia8ca38f98f346fa3cc910ceb7af47f8c903eb587

1 files changed, 3 insertions, 0 deletions

diff --git a/doc/build/dialects/index.rst b/doc/build/dialects/index.rst
index f5ca80207..216c1d5cc 100644
--- a/doc/build/dialects/index.rst
+++ b/doc/build/dialects/index.rst
@@ -105,6 +105,8 @@ Currently maintained external dialect projects for SQLAlchemy include:
 +------------------------------------------------+---------------------------------------+
 | MonetDB [1]_                                   | sqlalchemy-monetdb_                   |
 +------------------------------------------------+---------------------------------------+
+| OpenGauss                                      | openGauss-sqlalchemy_                 |
++------------------------------------------------+---------------------------------------+
 | SAP ASE (fork of former Sybase dialect)        | sqlalchemy-sybase_                    |
 +------------------------------------------------+---------------------------------------+
 | SAP Hana [1]_                                  | sqlalchemy-hana_                      |
@@ -118,6 +120,7 @@ Currently maintained external dialect projects for SQLAlchemy include:
 
 .. [1] Supports version 1.3.x only at the moment.
 
+.. _openGauss-sqlalchemy: https://gitee.com/opengauss/openGauss-sqlalchemy
 .. _sqlalchemy-ingres: https://github.com/clach04/ingres_sa_dialect
 .. _nzalchemy: https://pypi.org/project/nzalchemy/
 .. _ibm-db-sa: https://pypi.org/project/ibm-db-sa/