chore: Simplify sorting syntax in GraphQL queries for code and lymphoma pages

Author: rmariuzzo

src/pages/code.tsx

@@ -42,8 +42,7 @@ export const pageQuery = graphql`
   query {
     allMarkdownRemark(
       filter: { frontmatter: { slug: { regex: "/^/code//" } } }
-      sort: { fields: frontmatter___date, order: DESC }
-      limit: 10
+      sort: { frontmatter: { date: DESC } }
     ) {
       edges {
         node {

src/pages/lymphoma.tsx

@@ -42,7 +42,7 @@ export const pageQuery = graphql`
   query {
     allMarkdownRemark(
       filter: { frontmatter: { slug: { regex: "/^/lymphoma//" } } }
-      sort: { fields: frontmatter___date, order: DESC }
+      sort: { frontmatter: { date: DESC } }
     ) {
       edges {
         node {

src/pages/{MarkdownRemark.frontmatter__slug}.tsx

@@ -76,7 +76,7 @@ export const pageQuery = graphql`
         title
       }
     }
-    allMarkdownRemark(sort: { fields: frontmatter___date, order: ASC }) {
+    allMarkdownRemark(sort: { frontmatter: { date: ASC } }) {
       edges {
         node {
           frontmatter {