Fixed spec

Signed-off-by: saimedhi <[email protected]>

spec/namespaces/cluster.yaml

@@ -961,7 +961,7 @@ components:
     cluster.health::path.index:
       in: path
       name: index
-      description: Comma-separated list of data streams, indices, and index aliases used to limit the request. Wildcard expressions (*) are supported. To target all data streams and indices in a cluster, omit this parameter or use _all or *.
+      description: Comma-separated list of data streams, indices, and index aliases used to limit the request. Wildcard expressions (*) are supported. To target all data streams and indices in a cluster, omit this parameter or use `_all` or `*`.
       required: true
       schema:
         $ref: '../schemas/_common.yaml#/components/schemas/Indices'

spec/namespaces/indices.yaml

@@ -2972,7 +2972,7 @@ components:
       description: |-
         Name of the data stream, which must meet the following criteria:
         Lowercase only;
-        Cannot include `\`, `/`, `*`, `?`, `"`, `<`, `>`, `|`, `,`, `#`, `:`, or a space character;
+        Cannot include `/`, `*`, `?`, `"`, `<`, `>`, `|`, `,`, `#`, `:`, backslash, or a space character;
         Cannot start with `-`, `_`, `+`, or `.ds-`;
         Cannot be `.` or `..`;
         Cannot be longer than 255 bytes. Multi-byte characters count towards this limit faster.
@@ -4261,7 +4261,7 @@ components:
     indices.put_settings::query.ignore_unavailable:
       in: query
       name: ignore_unavailable
-      description: If `true`, returns settings in flat format.
+      description: Whether specified concrete indices should be ignored when unavailable (missing or closed).
       schema:
         type: boolean
       style: form