docs: update with new inspect output

Signed-off-by: Justin Chadwell <me@jedevc.com>

docs/reference/buildx_imagetools_inspect.md

@@ -287,22 +287,11 @@ $ docker buildx imagetools inspect moby/buildkit:master --format "{{json .Manife
 Following command provides [SLSA](https://github.com/moby/buildkit/blob/master/docs/attestations/slsa-provenance.md) JSON output:
 
 ```console
-$ docker buildx imagetools inspect crazymax/buildkit:attest --format "{{json .SLSA}}"
+$ docker buildx imagetools inspect crazymax/buildkit:attest --format "{{json .Provenance}}"
 ```
 ```json
 {
-  "Provenance": {
-    "_type": "https://in-toto.io/Statement/v0.1",
-    "predicateType": "https://slsa.dev/provenance/v0.2",
-    "subject": [
-      {
-        "name": "pkg:docker/crazymax/buildkit@attest?platform=linux%2Famd64",
-        "digest": {
-          "sha256": "fbd10fe50b4b174bb9ea273e2eb9827fa8bf5c88edd8635a93dc83e0d1aecb55"
-        }
-      }
-    ],
-    "predicate": {
+  "SLSA": {
     "builder": {
       "id": ""
     },
@@ -352,7 +341,6 @@ $ docker buildx imagetools inspect crazymax/buildkit:attest --format "{{json .SL
     }
   }
 }
-}
 ```
 
 Following command provides [SBOM](https://github.com/moby/buildkit/blob/master/docs/attestations/sbom.md) JSON output:
@@ -363,17 +351,6 @@ $ docker buildx imagetools inspect crazymax/buildkit:attest --format "{{json .SB
 ```json
 {
   "SPDX": {
-    "_type": "https://in-toto.io/Statement/v0.1",
-    "predicateType": "https://spdx.dev/Document",
-    "subject": [
-      {
-        "name": "pkg:docker/crazymax/buildkit@attest?platform=linux%2Famd64",
-        "digest": {
-          "sha256": "fbd10fe50b4b174bb9ea273e2eb9827fa8bf5c88edd8635a93dc83e0d1aecb55"
-        }
-      }
-    ],
-    "predicate": {
     "SPDXID": "SPDXRef-DOCUMENT",
     "creationInfo": {
       "created": "2022-12-01T11:46:48.063400162Z",
@@ -390,7 +367,6 @@ $ docker buildx imagetools inspect crazymax/buildkit:attest --format "{{json .SB
     "spdxVersion": "SPDX-2.2"
   }
 }
-}
 ```
 
 ```console
@@ -465,19 +441,8 @@ $ docker buildx imagetools inspect crazymax/buildkit:attest --format "{{json .}}
       }
     ]
   },
-  "SLSA": {
   "Provenance": {
-      "_type": "https://in-toto.io/Statement/v0.1",
-      "predicateType": "https://slsa.dev/provenance/v0.2",
-      "subject": [
-        {
-          "name": "pkg:docker/crazymax/buildkit@attest?platform=linux%2Famd64",
-          "digest": {
-            "sha256": "fbd10fe50b4b174bb9ea273e2eb9827fa8bf5c88edd8635a93dc83e0d1aecb55"
-          }
-        }
-      ],
-      "predicate": {
+    "SLSA": {
       "builder": {
         "id": ""
       },
@@ -526,21 +491,9 @@ $ docker buildx imagetools inspect crazymax/buildkit:attest --format "{{json .}}
         "https://mobyproject.org/buildkit@v1#metadata": {}
       }
     }
-    }
   },
   "SBOM": {
     "SPDX": {
-      "_type": "https://in-toto.io/Statement/v0.1",
-      "predicateType": "https://spdx.dev/Document",
-      "subject": [
-        {
-          "name": "pkg:docker/crazymax/buildkit@attest?platform=linux%2Famd64",
-          "digest": {
-            "sha256": "fbd10fe50b4b174bb9ea273e2eb9827fa8bf5c88edd8635a93dc83e0d1aecb55"
-          }
-        }
-      ],
-      "predicate": {
       "SPDXID": "SPDXRef-DOCUMENT",
       "creationInfo": {
         "created": "2022-12-01T11:46:48.063400162Z",
@@ -558,7 +511,6 @@ $ docker buildx imagetools inspect crazymax/buildkit:attest --format "{{json .}}
     }
   }
 }
-}
 ```
 
 #### Multi-platform