docs: document Blob V2 in the multimodal guide (#4623)

docs/web/sql/data-types.mdx

@@ -3,7 +3,7 @@ title: "SQL data types"
 sidebarTitle: "Data Types"
 description: "How Lance columns appear to SQL, including the types SQL has no name for."
 icon: shapes
-keywords: ["sql types", "arrow", "cast", "pseudo-columns", "vector", "blob", "json"]
+keywords: ["sql types", "arrow", "cast", "pseudo-columns", "vector", "json"]
 ---
 
 <Badge color="red">Enterprise</Badge> [SQL runs in LanceDB Enterprise.](/sql)
@@ -61,7 +61,7 @@ describes the full mapping.
 
 ## Types SQL has no name for {#no-name}
 
-Three column kinds you will meet that no SQL type name covers.
+Some column kinds have no SQL type name.
 
 ### Vectors {#vectors}
 
@@ -94,17 +94,6 @@ WHERE json_get_int(data, 'status') = 200
 `json_get`, its typed variants, and `json_extract` are **index-accelerated** by a
 JSON scalar index. See [Functions](/sql/scalar-functions#json).
 
-### Blobs {#blobs}
-
-A blob column is read either as its binary contents or as a **description**: a
-pointer plus metadata, without fetching the bytes. That choice changes the
-column's Arrow type, and therefore the schema your query sees.
-
-<Warning>
-The default reads blob columns as descriptions and other binary columns as
-binary. A query selecting a blob column and expecting bytes gets a struct.
-</Warning>
-
 ### bfloat16 {#bfloat16}
 
 Sixteen-bit floats in the bfloat16 layout, stored as `fixed_size_binary(2)`.

docs/web/sql/ddl/table.mdx

@@ -16,6 +16,7 @@ CREATE TABLE recent AS SELECT * FROM documents WHERE created_at > now() - INTERV
 ```
 
 Column types are Arrow types under SQL names. See [Data types](/sql/data-types).
+
 A table inside a [namespace](/sql/ddl/namespace) is written as a dotted path:
 `prod.events.clicks`.