[D1, DO] Clarifying supported SQLite extensions wording (#24837)

* Providing more detail on the SQLite extensions for D1

* Turning it into a partial file for both D1 and DO.

* Fixing grammar for partial file

* Apply suggestions from code review

Co-authored-by: Lambros Petrou <[email protected]>

---------

Co-authored-by: Lambros Petrou <[email protected]>

Author: Oxyjun

src/content/docs/d1/sql-api/sql-statements.mdx

@@ -13,10 +13,7 @@ You can execute any of these statements via the D1 console in the Cloudflare das
 
 ## Supported SQLite extensions
 
-D1 supports a subset of SQLite extensions for added functionality, including:
-
-- Default SQLite extensions.
-- [FTS5 module](https://www.sqlite.org/fts5.html) for full-text search.
+<Render file="d1-do-supported-sqlite-extensions" product="d1" params={{ product: "D1 supports" }}/>
 
 ## Compatible PRAGMA statements
 

src/content/docs/durable-objects/api/storage-api.mdx

@@ -71,7 +71,7 @@ export class Counter extends DurableObject {
 
 }
 
-````
+```
 </TypeScriptExample>
 
 JavaScript is a single-threaded and event-driven programming language. This means that JavaScript runtimes, by default, allow requests to interleave with each other which can lead to concurrency bugs. The Durable Objects runtime uses a combination of <GlossaryTooltip term="input gate">input gates</GlossaryTooltip> and <GlossaryTooltip term="output gate">output gates</GlossaryTooltip> to avoid this type of concurrency bug when performing storage operations. Learn more in our [blog post](https://blog.cloudflare.com/durable-objects-easy-fast-correct-choose-three/).
@@ -103,12 +103,14 @@ export class MyDurableObject extends DurableObject {
     `);
   }
 }
-````
+```
 
 - SQL API methods accessed with `ctx.storage.sql` are only allowed on [Durable Object classes with SQLite storage backend](/durable-objects/best-practices/access-durable-objects-storage/#create-sqlite-backed-durable-object-class) and will return an error if called on Durable Object classes with a key-value storage backend.
 - When writing data, every index counts as an additional row. However, indexes may be beneficial for read-heavy use cases. Refer to [Index for SQLite Durable Objects](/durable-objects/best-practices/access-durable-objects-storage/#index-for-sqlite-durable-objects).
 - Writing data to [SQLite virtual tables](https://www.sqlite.org/vtab.html) also counts towards rows written.
 
+<Render file="d1-do-supported-sqlite-extensions" product="d1" params={{ product: "Durable Objects support" }}/>
+
 ### `exec`
 
 <code>

src/content/partials/d1/d1-do-supported-sqlite-extensions.mdx

@@ -0,0 +1,12 @@
+---
+params:
+- product
+---
+
+{props.product} a subset of SQLite extensions for added functionality, including:
+
+- [FTS5 module](https://www.sqlite.org/fts5.html) for full-text search (including `fts5vocab`).
+- [JSON extension](https://www.sqlite.org/json1.html) for JSON functions and operators.
+- [Math functions](https://sqlite.org/lang_mathfunc.html).
+
+Refer to the [source code](https://github.com/cloudflare/workerd/blob/4c42a4a9d3390c88e9bd977091c9d3395a6cd665/src/workerd/util/sqlite.c%2B%2B#L269) for the full list of supported functions.