gopls/doc/features: fix two stray backticks

Change-Id: I6d3030b7a326bad1ec3307ced4ce47f8e9e37dce
Reviewed-on: https://go-review.googlesource.com/c/tools/+/688575
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>

Author: adonovan

gopls/doc/features/mcp.md

@@ -20,7 +20,7 @@ To use the 'attached' mode, run gopls with the `-mcp.listen` flag. For
 example:
 
 ```
-gopls serve -mcp.listen=localhost:8092`
+gopls serve -mcp.listen=localhost:8092
 ```
 
 This exposes an HTTP based MCP server using the server-sent event transport
@@ -47,7 +47,7 @@ session, to emphasize their importance. The `-instructions` flag causes them to
 be printed, so that you can do, for example:
 
 ```
-gopls mcp -instructions` > /path/to/contextFile.md
+gopls mcp -instructions > /path/to/contextFile.md
 ```
 
 ## Security considerations