Update generated README

Especially to link to put-shared jobs (https://doi-janky.infosiftr.net/job/put-shared/)

Author: tianon

README.md

@@ -19,6 +19,6 @@ For outstanding `mysql` image PRs, check [PRs with the "library/mysql" label on
 
 | Build | Status | Badges | (per-arch) |
 |:-:|:-:|:-:|:-:|
-| [![amd64 build status badge](https://img.shields.io/jenkins/s/https/doi-janky.infosiftr.net/job/multiarch/job/amd64/job/mysql.svg?label=amd64)](https://doi-janky.infosiftr.net/job/multiarch/job/amd64/job/mysql) |
+| [![amd64 build status badge](https://img.shields.io/jenkins/s/https/doi-janky.infosiftr.net/job/multiarch/job/amd64/job/mysql.svg?label=amd64)](https://doi-janky.infosiftr.net/job/multiarch/job/amd64/job/mysql) | [![put-shared build status badge](https://img.shields.io/jenkins/s/https/doi-janky.infosiftr.net/job/put-shared/job/light/job/mysql.svg?label=put-shared)](https://doi-janky.infosiftr.net/job/put-shared/job/light/job/mysql) |
 
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