fix misplaced backtick in example config in readme

sorry, I'm a pedant 😄

Author: chrisns

.golangci.example.yml

@@ -184,7 +184,7 @@ linters-settings:
     disabled-checks:
       - regexpMust
 
-    # Enable multiple checks by tags, run `GL_DEBUG=gocritic golangci-lint` run to see all tags and checks.
+    # Enable multiple checks by tags, run `GL_DEBUG=gocritic golangci-lint run` to see all tags and checks.
     # Empty list by default. See https://github.com/go-critic/go-critic#usage -> section "Tags".
     enabled-tags:
       - performance