fix failing build

Author: saihaj

src/pages/learn/response.mdx

@@ -41,7 +41,7 @@ In addition to the `data` key, the GraphQL specification outlines how [errors](h
 
 Request errors typically occur because the client made a mistake. For example, there may be a _syntax error_ in the document, such as a missing bracket or the use of an unknown root operation type keyword:
 
-<!-- snippet-ignore -->
+{/* <!-- snippet-ignore --> */}
 ```graphql
 # { "graphiql": true }
 operation { 

src/pages/learn/schema.mdx

@@ -210,7 +210,7 @@ type Character {
 
 As we see above, the Non-Null and List modifiers can be combined. For example, you can have a List of Non-Null `String` types:
 
-<!-- snippet-ignore -->
+{/* <!-- snippet-ignore --> */}
 ```graphql
 myField: [String!]
 ```
@@ -226,7 +226,7 @@ myField: ["a", null, "b"] // error
 
 Now, let's say we defined a Non-Null List of `String` types:
 
-<!-- snippet-ignore -->
+{/* <!-- snippet-ignore --> */}
 ```graphql
 myField: [String]!
 ```