adapt metadata format of codecs and sharding

Author: jstriebel

docs/v3/array-storage-transformers/sharding/v1.0.rst

@@ -94,22 +94,14 @@ Sharding can be configured per array in the :ref:`array-metadata` as follows:
     {
       storage_transformers: [
         {
-          "extension": "sharding",
-          "type": "indexed",
+          "name": "sharding",
           "configuration": {
-            "chunks_per_shard": [
-                2,
-                2
-            ]
+            "chunks_per_shard": [2, 2]
           }
+        }
       ]
     }
 
-``type``
-
-    Specifies a `Binary shard format`_. In this version, the only binary format
-    is the ``indexed`` format.
-
 ``chunks_per_shard``
 
     An array of integers providing the number of chunks that are combined in a
@@ -157,8 +149,8 @@ separator (e.g. "data/root/foo/baz/c3/9"). Chunk grid positions ``[96, 19]``,
 Binary shard format
 -------------------
 
-The only binary format is the ``indexed`` format, as specified by the ``type``
-configuration key. Other binary formats might be added in future versions.
+The only binary format at the moment is an indexed binary format as described
+below. Other binary formats might be added in future versions.
 
 In the indexed binary format, chunks are written successively in a shard, where
 unused space between them is allowed, followed by an index referencing them. The

docs/v3/codecs/blosc/v1.0.rst

@@ -92,7 +92,7 @@ default block size::
 
     {
         "codecs": [{
-            "type": "blosc",
+            "name": "blosc",
             "configuration": {
                 "cname": "lz4",
                 "clevel": 1,

docs/v3/codecs/gzip/v1.0.rst

@@ -68,7 +68,7 @@ the Gzip codec configured with a compression level of 1::
 
     {
         "codecs": [{
-            "type": "gzip",
+            "name": "gzip",
             "configuration": {                                                                                
                 "level": 1                                                                                    
             }