change CI comparison operator to a string "true"

Signed-off-by: Randy Lau <randychilau@gmail.com>

gatsby-node.js

@@ -11,7 +11,7 @@ const { paginate } = require("gatsby-awesome-pagination");
 const { createFilePath } = require("gatsby-source-filesystem");
 const config = require("./gatsby-config");
 
-if (process.env.CI === true) {
+if (process.env.CI === "true") {
   // All process.env.CI conditionals in this file are in place for GitHub Pages, if webhost changes in the future, code may need to be modified or removed.
   //Replacing '/' would result in empty string which is invalid
   const replacePath = (url) => (url === "/" || url.includes("/404")) ? url : `${url}.html`;
@@ -69,7 +69,7 @@ exports.createPages = async ({ actions, graphql, reporter }) => {
   const { createPage } = actions;
 
   const envCreatePage = (props) => {
-    if (process.env.CI === true){
+    if (process.env.CI === "true"){
       const { path, ...rest } = props;
 
       createRedirect({ fromPath: `/${path}/`, toPath: `/${path}`, redirectInBrowser: true, isPermanent: true });