Apply suggestions from code review

Co-authored-by: Stuart Pearson <[email protected]>

Author: npalm

docs/configuration.md

@@ -215,9 +215,9 @@ In case the setup does not work as intended, trace the events through this seque
 
 ### Termination watcher
 
-This feature is in early stage and therefore disabled by default. To enable the watcher set `instance_termination_watcher.enable = true`.
+This feature is in early stage and therefore disabled by default. To enable the watcher, set `instance_termination_watcher.enable = true`.
 
-The termination watcher is currently watching for spot terminations. The module is only taken events into account for instances tagged with `ghr:environment` by default when deployment the module as part of one of the main modules (root or multi-runner). The module can also be deployed stand-alone, in that case the tag filter needs to be tunned.
+The termination watcher is currently watching for spot terminations. The module is only taken events into account for instances tagged with `ghr:environment` by default when deployment the module as part of one of the main modules (root or multi-runner). The module can also be deployed stand-alone, in this case, the tag filter needs to be tunned.
 
 ### Termination notification