Revert "temp: Remove $schema references to debug validation issue"

This reverts commit 0e219a0.

Author: tadasant

docs/reference/server-json/generic-server-json.md

@@ -22,6 +22,7 @@ The official registry has some more restrictions on top of this. See the [offici
 
 ```json
 {
+  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-09-16/server.schema.json",
   "name": "io.modelcontextprotocol.anonymous/brave-search",
   "description": "MCP server for Brave Search API integration",
   "status": "active",
@@ -68,6 +69,7 @@ For MCP servers located within a subdirectory of a larger repository (monorepo s
 
 ```json
 {
+  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-09-16/server.schema.json",
   "name": "io.modelcontextprotocol/everything",
   "description": "MCP server that exercises all the features of the MCP protocol",
   "status": "active",
@@ -149,7 +151,7 @@ This will essentially instruct the MCP client to execute `dnx Knapcode.SampleMcp
 
 ```json
 {
-
+  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-09-16/server.schema.json",
   "name": "io.github.modelcontextprotocol/filesystem",
   "description": "Node.js server implementing Model Context Protocol (MCP) for filesystem operations.",
   "status": "active",
@@ -496,7 +498,7 @@ The `dnx` tool ships with the .NET 10 SDK, starting with Preview 6.
 
 ```json
 {
-
+  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-09-16/server.schema.json",
   "name": "io.modelcontextprotocol.anonymous/hybrid-mcp",
   "description": "MCP server available as both local package and remote service",
   "repository": {
@@ -624,7 +626,7 @@ Some CLI tools bundle an MCP server, without a standalone MCP package or a publi
 
 ```json
 {
-
+  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-09-16/server.schema.json",
   "name": "io.snyk/cli-mcp",
   "description": "MCP server provided by the Snyk CLI",
   "status": "active",
@@ -659,7 +661,7 @@ For MCP servers that follow a custom installation path or are embedded in applic
 
 ```json
 {
-
+  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-09-16/server.schema.json",
   "name": "io.modelcontextprotocol.anonymous/embedded-mcp",
   "description": "MCP server embedded in a Desktop app",
   "status": "active",