Minor fixes to env vars in docs

Author: stevejgordon

docs/reference/config-supportability.md

@@ -27,9 +27,12 @@ The `AddElasticApm()` extension enables configuration, as is typical in an ASP.N
 
 | Environment variable name | IConfiguration or Web.config key |
 | --- | --- |
-| `ELASTIC_APM_LOG_LEVEL` | `ElasticApm:LogLevel` |
+| `OTEL_LOG_LEVEL` | `ElasticApm:LogLevel` |
 
 | Default | Type |
 | --- | --- |
 | `Error` | String |
 
+::::{note} 
+Although prefixed with `OTEL_` we prefer `OTEL_LOG_LEVEL`, when present as this aligns with the configuration for EDOT .NET and OpenTelemetry SDKs, simplifying migrations.
+::::

docs/reference/setup-auto-instrumentation.md

@@ -392,7 +392,7 @@ The default value is `warn`. More verbose log levels like `trace` and `debug` ca
 This takes precedence over the now deprecated `ELASTIC_APM_PROFILER_LOG` environment variable.
 
 ::::{note} 
-Although prefixed with `OTEL_` we prefer `OTEL_LOG_LEVEL`, when present as this aligns with the configuration for OpenTelemetry SDKs, simplifying migrations.
+Although prefixed with `OTEL_` we prefer `OTEL_LOG_LEVEL`, when present as this aligns with the configuration for EDOT .NET and OpenTelemetry SDKs, simplifying migrations.
 ::::
 
 `OTEL_DOTNET_AUTO_LOG_DIRECTORY` *(optional)*
@@ -411,7 +411,7 @@ The user account under which the profiler process runs must have permission to w
 ::::
 
 ::::{note} 
-Although prefixed with `OTEL_` we prefer `OTEL_LOG_LEVEL`, when present as this aligns with the configuration for OpenTelemetry SDKs, simplifying migrations.
+Although prefixed with `OTEL_` we prefer `OTEL_DOTNET_AUTO_LOG_DIRECTORY`, when present as this aligns with the configuration for EDOT .NET and OpenTelemetry SDKs, simplifying migrations.
 ::::
 
 `ELASTIC_OTEL_LOG_TARGETS` *(optional)*
@@ -421,7 +421,7 @@ Although prefixed with `OTEL_` we prefer `OTEL_LOG_LEVEL`, when present as this
     * stdout
 
 
-The default value is `file`, which logs to the directory specified by `ELASTIC_APM_PROFILER_LOG_DIR` environment variable.
+The default value is `file`, which logs to the directory specified by `OTEL_DOTNET_AUTO_LOG_DIRECTORY` environment variable.
 
 This takes precedence over the now deprecated `ELASTIC_APM_PROFILER_LOG_TARGETS`