Update docs

Co-authored-by: Travis-Turner <32389151+Travis-Turner@users.noreply.github.com>

docs/datadog.md

@@ -30,10 +30,10 @@ imgproxy will send the following info to Datadog:
 
 ## Additional metrics
 
-When the `IMGPROXY_DATADOG_ENABLE_ADDITIONAL_METRICS` environment variable is set to `true` imgproxy will send the following additional metrics to Datadog:
+When the `IMGPROXY_DATADOG_ENABLE_ADDITIONAL_METRICS` environment variable is set to `true`, imgproxy will send the following additional metrics to Datadog:
 
-* `imgproxy.requests_in_progress`: a number of requests currently being in progress
-* `imgproxy.images_in_progress`: a number of images currently being in progress
+* `imgproxy.requests_in_progress`: the number of requests currently in progress
+* `imgproxy.images_in_progress`: the number of images currently in progress
 * `imgproxy.buffer.size`: a histogram of the download/gzip buffers sizes (in bytes)
 * `imgproxy.buffer.default_size`: calibrated default buffer size (in bytes)
 * `imgproxy.buffer.max_size`: calibrated maximum buffer size (in bytes)

docs/new_relic.md

@@ -18,8 +18,8 @@ imgproxy will send the following info to New Relic:
 
 Additionally, imgproxy sends the following metrics over [Metrics API](https://docs.newrelic.com/docs/data-apis/ingest-apis/metric-api/introduction-metric-api/):
 
-* `imgproxy.requests_in_progress`: a number of requests currently being in progress
-* `imgproxy.images_in_progress`: a number of images currently being in progress
+* `imgproxy.requests_in_progress`: the number of requests currently in progress
+* `imgproxy.images_in_progress`: the number of images currently in progress
 * `imgproxy.buffer.size`: a summary of the download/gzip buffers sizes (in bytes)
 * `imgproxy.buffer.default_size`: calibrated default buffer size (in bytes)
 * `imgproxy.buffer.max_size`: calibrated maximum buffer size (in bytes)

docs/prometheus.md

@@ -12,8 +12,8 @@ imgproxy will collect the following metrics:
 * `errors_total`: a counter of the occurred errors separated by type (timeout, downloading, processing)
 * `request_duration_seconds`: a histogram of the request latency (in seconds)
 * `request_span_duration_seconds`: a histogram of the request latency (in seconds) separated by span (queue, downloading, processing)
-* `requests_in_progress`: a number of requests currently being in progress
-* `images_in_progress`: a number of images currently being in progress
+* `requests_in_progress`: the number of requests currently in progress
+* `images_in_progress`: the number of images currently in progress
 * `buffer_size_bytes`: a histogram of the download/gzip buffers sizes (in bytes)
 * `buffer_default_size_bytes`: calibrated default buffer size (in bytes)
 * `buffer_max_size_bytes`: calibrated maximum buffer size (in bytes)