improve fileMatch descriptions for exclusion patterns

extensions/json-language-features/package.nls.json

@@ -3,7 +3,7 @@
 	"description": "Provides rich language support for JSON files.",
 	"json.schemas.desc": "Associate schemas to JSON files in the current project",
 	"json.schemas.url.desc": "A URL to a schema or a relative path to a schema in the current directory",
-	"json.schemas.fileMatch.desc": "An array of file patterns to match against when resolving JSON files to schemas.",
+	"json.schemas.fileMatch.desc": "An array of file patterns to match against when resolving JSON files to schemas. `*` can be used as a wildcard. Exclusion patterns can also be defined and start with '!'. A file matches when there at least one matching pattern and the last matching pattern is not an exclusion pattern.",
 	"json.schemas.fileMatch.item.desc": "A file pattern that can contain '*' to match against when resolving JSON files to schemas.",
 	"json.schemas.schema.desc": "The schema definition for the given URL. The schema only needs to be provided to avoid accesses to the schema URL.",
 	"json.format.enable.desc": "Enable/disable default JSON formatter",

extensions/json-language-features/server/README.md

@@ -62,7 +62,7 @@ The server supports the following settings:
   - `format`
     - `enable`: Whether the server should register the formatting support. This option is only applicable if the client supports *dynamicRegistration* for *rangeFormatting* and `initializationOptions.provideFormatter` is not defined.
     - `schema`: Configures association of file names to schema URL or schemas and/or associations of schema URL to schema content.
-	  - `fileMatch`: an array of file names or paths (separated by `/`). `*` can be used as a wildcard.
+	  - `fileMatch`: an array of file names or paths (separated by `/`). `*` can be used as a wildcard. Exclusion patterns can also be defined and start with '!'. A file matches when there at least one matching pattern and the last matching pattern is not an exclusion pattern.
 	  - `url`: The URL of the schema, optional when also a schema is provided.
 	  - `schema`: The schema content.
     - `resultLimit`: The max number foldig ranges and otline symbols to be computed (for performance reasons)