Improve tracing documentation

docs/content/observability/tracing/instana.md

@@ -2,11 +2,16 @@
 
 To enable the Instana:
 
-```toml tab="File"
+```toml tab="File (TOML)"
 [tracing]
   [tracing.instana]
 ```
 
+```yaml tab="File (YAML)"
+tracing:
+  instana: {}
+```
+
 ```bash tab="CLI"
 --tracing
 --tracing.instana
@@ -18,12 +23,18 @@ _Require, Default="127.0.0.1"_
 
 Local Agent Host instructs reporter to send spans to instana-agent at this address.
 
-```toml tab="File"
+```toml tab="File (TOML)"
 [tracing]
   [tracing.instana]
     localAgentHost = "127.0.0.1"
 ```
 
+```yaml tab="File (YAML)"
+tracing:
+  instana:
+    localAgentHost: 127.0.0.1
+```
+
 ```bash tab="CLI"
 --tracing
 --tracing.instana.localAgentHost="127.0.0.1"
@@ -35,12 +46,18 @@ _Require, Default=42699_
 
 Local Agent port instructs reporter to send spans to the instana-agent at this port.
 
-```toml tab="File"
+```toml tab="File (TOML)"
 [tracing]
   [tracing.instana]
     localAgentPort = 42699
 ```
 
+```yaml tab="File (YAML)"
+tracing:
+  instana:
+    localAgentPort: 42699
+```
+
 ```bash tab="CLI"
 --tracing
 --tracing.instana.localAgentPort=42699
@@ -59,12 +76,18 @@ Valid values for logLevel field are:
 - `debug`
 - `info`
 
-```toml tab="File"
+```toml tab="File (TOML)"
 [tracing]
   [tracing.instana]
     logLevel = "info"
 ```
 
+```yaml tab="File (YAML)"
+tracing:
+  instana:
+    logLevel: info
+```
+
 ```bash tab="CLI"
 --tracing
 --tracing.instana.logLevel="info"