docs: fix review comments - capitalize Juju and replace e.g.

Author: cbartz

README.md

@@ -1,6 +1,6 @@
 # GitHub runner operators
 
-This repository contains applications, juju charms, Grafana dashboards and actions related to operating and using
+This repository contains applications, Juju charms, Grafana dashboards and actions related to operating and using
 self-hosted GitHub Actions runners.
 
 

docs/reference/grafana-dashboards.md

@@ -12,4 +12,4 @@
 Dashboard JSON files should use `__inputs` to declare the datasource (type `prometheus`).
 Setting `"editable": false` is recommended for clarity. Metric names follow the
 [OpenTelemetry hostmetrics receiver](https://opentelemetry.io/docs/collector/components/#receiver)
-Prometheus naming convention (e.g. `system_cpu_time_seconds_total`).
+Prometheus naming convention (for example, `system_cpu_time_seconds_total`).