fix: ASCII single quote

Author: zigzago

core/src/main/java/com/google/adk/events/Event.java

@@ -272,7 +272,7 @@ public void setModelVersion(@Nullable String modelVersion) {
   }
 
   /**
-   * Input transcription. The transcription is independent to the model turn which means it doesn’t
+   * Input transcription. The transcription is independent to the model turn which means it doesn't
    * imply any ordering between transcription and model turn.
    */
   @JsonProperty("inputTranscription")
@@ -285,7 +285,7 @@ public void setInputTranscription(@Nullable Transcription inputTranscription) {
   }
 
   /**
-   * Output transcription. The transcription is independent to the model turn which means it doesn’t
+   * Output transcription. The transcription is independent to the model turn which means it doesn't
    * imply any ordering between transcription and model turn.
    */
   @JsonProperty("outputTranscription")

core/src/main/java/com/google/adk/models/LlmResponse.java

@@ -117,14 +117,14 @@ public abstract class LlmResponse extends JsonBaseModel {
   public abstract Optional<String> modelVersion();
 
   /**
-   * Input transcription. The transcription is independent to the model turn which means it doesn’t
+   * Input transcription. The transcription is independent to the model turn which means it doesn't
    * imply any ordering between transcription and model turn.
    */
   @JsonProperty("inputTranscription")
   public abstract Optional<Transcription> inputTranscription();
 
   /**
-   * Output transcription. The transcription is independent to the model turn which means it doesn’t
+   * Output transcription. The transcription is independent to the model turn which means it doesn't
    * imply any ordering between transcription and model turn.
    */
   @JsonProperty("outputTranscription")