chore: update readme to outline properly the example

refs #503 (comment)
refs #503 (comment)

Author: smoke

javaagent-log-appender/README.md

@@ -1,7 +1,7 @@
-# OpenTelemetry Log Appender Example
+# OpenTelemetry Log Appender built-in OpenTelemetry Java Agent Example
 
 This example demonstrates an application configured to use the OpenTelemetry Log
-Appenders to bridge logs into the OpenTelemetry Log SDK, and export
+Appenders built-in OpenTelemetry Java Agent to bridge logs into the OpenTelemetry Log SDK, and export
 via [OTLP](https://opentelemetry.io/docs/reference/specification/protocol/otlp/).
 
 Details about the example:
@@ -12,10 +12,10 @@ Details about the example:
 * The application is configured with a variety of log solutions:
   * Log4j API [configured](./src/main/resources/log4j2.xml) to print logs to the
     console and
-    the [OpenTelemetry Log4J Appender](https://github.com/open-telemetry/opentelemetry-java-instrumentation/blob/main/instrumentation/log4j/log4j-appender-2.17/library/README.md).
+    the [OpenTelemetry Log4J Appender](https://github.com/open-telemetry/opentelemetry-java-instrumentation/blob/main/instrumentation/log4j/log4j-appender-2.17/javaagent/README.md).
   * SLF4J API [configured with Logback](./src/main/resources/logback.xml) to
     print logs to the console and
-    the [OpenTelemetry Logback Appender](https://github.com/open-telemetry/opentelemetry-java-instrumentation/blob/main/instrumentation/logback/logback-appender-1.0/library/README.md).
+    the [OpenTelemetry Logback Appender](https://github.com/open-telemetry/opentelemetry-java-instrumentation/blob/main/instrumentation/logback/logback-appender-1.0/javaagent/README.md).
   * [JUL to SLF4J](./build.gradle.kts), which bridges JUL logs to the SLF4J API, and
     ultimately to Logback.
 * Demonstrates how trace context is propagated to logs when recorded within a