Add readme_release back (updated)

Also minor typo change

readme_release.md

@@ -0,0 +1,26 @@
+# HOW TO Release navitia
+
+## Versioning
+
+Our versionning is based on [Semantic Versionning](https://semver.org/)
+* The **major** version is bumped in case of an API/interface change or **when a binarisation is needed**.
+  If the `data_version` located in `source/type/data.cpp` changes, then binarisation is needed (See
+  [CONTRIBUTING.md](CONTRIBUTING.md) for details on how `data_version` is managed).
+* the **minor** version is bumped when functionnalities are backward compatible.
+* the **patch** version is bumped on a bug fix.
+
+## Releasing
+
+First have a look on github's repo at PRs about to be released, using
+[recently merged PRs](https://github.com/hove-io/navitia/pulls?q=is%3Apr+is%3Aclosed+sort%3Aupdated-desc)
+and commits merged since `<latest_version>` (replace with [latest tag](https://github.com/hove-io/navitia/releases)):
+[https://github.com/hove-io/navitia/compare/`<latest_version>`...dev](https://github.com/hove-io/navitia/compare/<latest_version>...dev)
+* Adjust/check that `not_in_changelog` and `hotfix` labels are correct and none is missing on PRs that are gonna be released
+* Adjust/check that titles are correct (typo, clarity, with the component impacted)
+
+Then publish the release on Github:
+* In [Github's release page](https://github.com/hove-io/navitia/releases), click `Draft a new release`
+* Tag to create and version names are going to be the same: `vX.Y.Z`
+* Click `Generate release notes` and review the page, then publish.
+* :heavy_check_mark: Let the CI do its work, and draft some PRs to deploy
+  components of this new version everywhere necessary.

source/kraken/metrics.cpp

@@ -103,7 +103,7 @@ Metrics::Metrics(const boost::optional<std::string>& endpoint, const std::string
     }
     auto& in_flight_family = prometheus::BuildGauge()
                                  .Name("kraken_request_in_flight")
-                                 .Help("Number of requests currently beeing processed")
+                                 .Help("Number of requests currently being processed")
                                  .Labels({{"coverage", coverage}})
                                  .Register(*registry);
     this->in_flight = &in_flight_family.Add({});