docs: add zoispag as a contributor (#771)

Co-authored-by: allcontributors[bot] <46447321+allcontributors[bot]@users.noreply.github.com>

.all-contributorsrc

@@ -311,7 +311,8 @@
       "profile": "https://github.com/zoispag",
       "contributions": [
         "code",
-        "review"
+        "review",
+        "maintenance"
       ]
     },
     {

README.md

@@ -82,7 +82,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
     <td align="center"><a href="http://simme.dev"><img src="https://avatars0.githubusercontent.com/u/1596025?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Simon Aronsson</b></sub></a><br /><a href="https://github.com/containrrr/watchtower/commits?author=simskij" title="Code">💻</a> <a href="#maintenance-simskij" title="Maintenance">🚧</a> <a href="https://github.com/containrrr/watchtower/pulls?q=is%3Apr+reviewed-by%3Asimskij" title="Reviewed Pull Requests">👀</a> <a href="https://github.com/containrrr/watchtower/commits?author=simskij" title="Documentation">📖</a></td>
     <td align="center"><a href="https://github.com/Ansem93"><img src="https://avatars3.githubusercontent.com/u/6626218?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Ansem93</b></sub></a><br /><a href="https://github.com/containrrr/watchtower/commits?author=Ansem93" title="Documentation">📖</a></td>
     <td align="center"><a href="https://github.com/lukapeschke"><img src="https://avatars1.githubusercontent.com/u/17085536?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Luka Peschke</b></sub></a><br /><a href="https://github.com/containrrr/watchtower/commits?author=lukapeschke" title="Code">💻</a> <a href="https://github.com/containrrr/watchtower/commits?author=lukapeschke" title="Documentation">📖</a></td>
-    <td align="center"><a href="https://github.com/zoispag"><img src="https://avatars0.githubusercontent.com/u/21138205?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Zois Pagoulatos</b></sub></a><br /><a href="https://github.com/containrrr/watchtower/commits?author=zoispag" title="Code">💻</a> <a href="https://github.com/containrrr/watchtower/pulls?q=is%3Apr+reviewed-by%3Azoispag" title="Reviewed Pull Requests">👀</a></td>
+    <td align="center"><a href="https://github.com/zoispag"><img src="https://avatars0.githubusercontent.com/u/21138205?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Zois Pagoulatos</b></sub></a><br /><a href="https://github.com/containrrr/watchtower/commits?author=zoispag" title="Code">💻</a> <a href="https://github.com/containrrr/watchtower/pulls?q=is%3Apr+reviewed-by%3Azoispag" title="Reviewed Pull Requests">👀</a> <a href="#maintenance-zoispag" title="Maintenance">🚧</a></td>
     <td align="center"><a href="https://alexandre.menif.name"><img src="https://avatars0.githubusercontent.com/u/16152103?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Alexandre Menif</b></sub></a><br /><a href="https://github.com/containrrr/watchtower/commits?author=alexandremenif" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/chugunov"><img src="https://avatars1.githubusercontent.com/u/4140479?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Andrey</b></sub></a><br /><a href="https://github.com/containrrr/watchtower/commits?author=chugunov" title="Documentation">📖</a></td>
   </tr>