Point examples to updated images

[Jogai]

Since I couldn't make an issue, here is a PR. I think pointing to the old image could lead to people using the wrong one. This PR fixes that. Also, changed the link to github.

[Jogai]

Also, when I use "chinaboeller/pgadmin4:7.8-py3.12-alpine" I get:

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Traceback (most recent call last):
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  File "//./usr/local/lib/python3.12/site-packages/pgadmin4/pgAdmin4.py", line 104, in <module>
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    app = create_app()
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          ^^^^^^^^^^^^
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  File "/usr/local/lib/python3.12/site-packages/pgadmin4/pgadmin/__init__.py", line 760, in create_app
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    app.register_blueprint(module)
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  File "/usr/local/lib/python3.12/site-packages/flask/scaffold.py", line 50, in wrapper_func
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    return f(self, *args, **kwargs)
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           ^^^^^^^^^^^^^^^^^^^^^^^^
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  File "/usr/local/lib/python3.12/site-packages/flask/app.py", line 1299, in register_blueprint
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    blueprint.register(self, options)
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  File "/usr/local/lib/python3.12/site-packages/pgadmin4/pgadmin/tools/__init__.py", line 52, in register
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    from .psql import blueprint as module
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  File "/usr/local/lib/python3.12/site-packages/pgadmin4/pgadmin/tools/psql/__init__.py", line 15, in <module>
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    from eventlet.green import subprocess
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  File "/usr/local/lib/python3.12/site-packages/eventlet/__init__.py", line 17, in <module>
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    from eventlet import convenience
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  File "/usr/local/lib/python3.12/site-packages/eventlet/convenience.py", line 7, in <module>
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    from eventlet.green import socket
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  File "/usr/local/lib/python3.12/site-packages/eventlet/green/socket.py", line 21, in <module>
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    from eventlet.support import greendns
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  File "/usr/local/lib/python3.12/site-packages/eventlet/support/greendns.py", line 45, in <module>
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    from eventlet.green import ssl
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  File "/usr/local/lib/python3.12/site-packages/eventlet/green/ssl.py", line 25, in <module>
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    _original_wrap_socket = __ssl.wrap_socket
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                            ^^^^^^^^^^^^^^^^^
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AttributeError: module 'ssl' has no attribute 'wrap_socket'