Update Sentry and spans-and-attributes documentation for clarity

- Clarified the format for the Sentry authentication header in the OpenTelemetry data exporting instructions.
- Updated attribute names in spans-and-attributes documentation to include the correct units for CPU and wall time.

Author: nevikashah

src/content/docs/workers/observability/exporting-opentelemetry-data/sentry.mdx

@@ -59,7 +59,7 @@ To configure your traces destination, click **Add destination** and configure th
    - **OTLP Endpoint**: Your Sentry OTLP traces endpoint (e.g., `https://{HOST}/api/{PROJECT_ID}/integration/otlp/v1/traces`)
    - **Custom Headers**: Add the Sentry authentication header:
      - Header name: `x-sentry-auth`
-     - Header value: `sentry sentry_key={SENTRY_PUBLIC_KEY}` where {SENTRY_PUBLIC_KEY} is your Sentry project's public key
+     - Header value: `sentry sentry_key={SENTRY_PUBLIC_KEY}` where `{SENTRY_PUBLIC_KEY}` is your Sentry project's public key
 
 ### Logs destination
 

src/content/docs/workers/observability/traces/spans-and-attributes.mdx

@@ -77,8 +77,8 @@ Cloudflare Workers provides automatic tracing instrumentation **out of the box**
 #### Attributes availabe on all handlers
 
 - `cloudflare.outcome`
-- `cloudflare.cpu_time`
-- `cloudflare.wall_time`
+- `cloudflare.cpu_time_ms`
+- `cloudflare.wall_time_ms`
 - `faas.trigger`
 - `cloudflare.ray_id`
 - `cloudflare.verified_bot_category`