[hotfix][docs] Explicitly set connector compatibility as string to prevent version comparison mismatch

Author: hlteoh37

docs/data/dynamodb.yml

@@ -17,7 +17,7 @@
 ################################################################################
 
 version: 5.0.0
-flink_compatibility: [1.19, 1.20]
+flink_compatibility: ["1.19", "1.20"]
 variants:
   - maven: flink-connector-dynamodb
     sql_url: https://repo.maven.apache.org/maven2/org/apache/flink/flink-sql-connector-dynamodb/$full_version/flink-sql-connector-dynamodb-$full_version.jar

docs/data/firehose.yml

@@ -17,7 +17,7 @@
 ################################################################################
 
 version: 5.0.0
-flink_compatibility: [1.19, 1.20]
+flink_compatibility: ["1.19", "1.20"]
 variants:
   - maven: flink-connector-aws-kinesis-firehose
     sql_url: https://repo.maven.apache.org/maven2/org/apache/flink/flink-sql-connector-aws-kinesis-firehose/$full_version/flink-sql-connector-aws-kinesis-firehose-$full_version.jar

docs/data/kinesis.yml

@@ -17,7 +17,7 @@
 ################################################################################
 
 version: 5.0.0
-flink_compatibility: [1.19, 1.20]
+flink_compatibility: ["1.19", "1.20"]
 variants:
   - maven: flink-connector-kinesis
     sql_url: https://repo.maven.apache.org/maven2/org/apache/flink/flink-sql-connector-kinesis/$full_version/flink-sql-connector-kinesis-$full_version.jar

docs/data/sqs.yml

@@ -17,6 +17,6 @@
 ################################################################################
 
 version: 5.0.0
-flink_compatibility: [1.19, 1.20]
+flink_compatibility: ["1.19", "1.20"]
 variants:
   - maven: flink-connector-sqs