fix(gatsby-source-wordpress): Remove search and replace regex literal recommendation (#31413)

Co-authored-by: Tyler Barnes <[email protected]>

Author: jooola

packages/gatsby-source-wordpress/docs/plugin-options.md

@@ -804,7 +804,7 @@ An array of options to search and replace strings in nodes. See below for option
 
 ### searchAndReplace[].search
 
-The regex rule used to search a string. Using a 'regular expression literal' is recommended over a simple regex string.
+The regex rule used to search when replacing strings in node data. It will search the stringified JSON of each node to capture strings at any nested depth.
 
 **Field type**: `String`
 

packages/gatsby-source-wordpress/src/steps/declare-plugin-options-schema.ts

@@ -539,7 +539,7 @@ When using this option, be sure to gitignore the wordpress-cache directory in th
         Joi.object({
           search: Joi.string()
             .description(
-              `The regex rule used to search a terme. Using a 'regular expression literal' is recommended over a simple regex string.`
+              `The regex rule used to search when replacing strings in node data. It will search the stringified JSON of each node to capture strings at any nested depth.`
             )
             .meta({
               example: wrapOptions(`