Add general data type overview to intro section

Author: JoshuaMoelans

platform-includes/performance/improving-data/native.mdx

@@ -1,13 +1,15 @@
 ## Improving Data on Transactions and Spans
-
-### Adding Data Attributes to Transactions
-
-You can add data attributes to your transactions. This data is visible in the trace explorer in Sentry. Data attributes must be of type `sentry_value_t`, which can store 
+You can add Data Attributes to both Spans and Transactions. This data is visible in the trace explorer in Sentry.
+The data must be of type `sentry_value_t`, which can store:
 * 32-bit signed integers,
 * double-precision floating-points,
 * null-terminated strings, as well as
 * lists and string-keyed maps containing `sentry_value_t` entries
 
+### Adding Data Attributes to Transactions
+
+You can add data attributes to your transactions using the following API:
+
 ```c
 sentry_transaction_context_t *tx_ctx =
     sentry_transaction_context_new("processOrderBatch()", "task");
@@ -42,7 +44,7 @@ sentry_transaction_set_data(tx, "my-data-attribute-6", value_object);
 
 ### Adding Data Attributes to Spans
 
-You can add data attributes to your spans. This data is visible in the trace explorer in Sentry. Data attributes must be of type `sentry_value_t`, which can be used to store `int32_t`, `double`, `int`, `char *` as well as lists containing `sentry_value_t` entries or a map with `char *` keys and `sentry_value_t` values:
+You can add data attributes to your spans using the following API:
 
 ```c
 sentry_transaction_context_t *tx_ctx =