guides: update API key instructions (#4848)

Author: LorrisSaintGenez

templates/csharp/guides/search/saveObjectsMovies.mustache

@@ -20,7 +20,7 @@ class SaveObjectsMovies
         // parse json
         var movies = JsonSerializer.Deserialize<List<dynamic>>(content);
 
-        // initiate client and index
+        // initiate client and index with your app ID and write API key
         {{> snippets/init}}
 
         // push data to algolia

templates/dart/guides/search/saveObjectsMovies.mustache

@@ -3,7 +3,7 @@ import 'dart:convert';
 {{> snippets/import}}
 
 void main() async {
-  // initiate client
+  // initiate client with your app ID and write API key
   {{> snippets/init}}
 
   // read json file from url

templates/go/guides/search/saveObjectsMovies.mustache

@@ -29,7 +29,7 @@ func saveObjectsMovies() {
     return
   }
 
-	// initiate client
+    // initiate client with your app ID and write API key
     {{> snippets/init}}
 
 	// push data to algolia

templates/java/guides/search/saveObjectsMovies.mustache

@@ -20,7 +20,7 @@ public class saveObjectsMovies {
     List<JsonNode> movies = mapper.readValue(stream, new TypeReference<List<JsonNode>>() {});
     stream.close();
 
-    // Connect and authenticate with your Algolia app
+    // Connect and authenticate with your Algolia app using your app ID and write API key
     {{> snippets/init}}
 
     // Save records in Algolia index

templates/php/guides/search/saveObjectsMovies.mustache

@@ -7,7 +7,7 @@ $url = "https://dashboard.algolia.com/api/1/sample_datasets?type=movie";
 $response = file_get_contents($url);
 $movies = json_decode($response ?: "[]", true);
 
-// Connect and authenticate with your Algolia app
+// Connect and authenticate with your Algolia app using your app ID and write API key
 {{> snippets/init}}
 
 // Save records in Algolia index

templates/python/guides/search/saveObjectsMovies.mustache

@@ -6,7 +6,7 @@ import requests
 url = "https://dashboard.algolia.com/api/1/sample_datasets?type=movie"
 movies = requests.get(url).json()
 
-# Connect and authenticate with your Algolia app
+# Connect and authenticate with your Algolia app using your app ID and write API key
 _{{> snippets/init}}
 
 # Save records in Algolia index

templates/ruby/guides/search/saveObjectsMovies.mustache

@@ -6,7 +6,7 @@ uri = URI('https://dashboard.algolia.com/api/1/sample_datasets?type=movie')
 response = Net::HTTP.get_response(uri)
 movies = JSON.parse(response.body)
 
-# Connect and authenticate with your Algolia app
+# Connect and authenticate with your Algolia app using your app ID and write API key
 {{> snippets/init}}
 
 # Save records in Algolia index

templates/scala/guides/search/saveObjectsMovies.mustache

@@ -19,7 +19,7 @@ object Main {
     val result = Source.fromURL(url).mkString
     val movies = JsonMethods.parse(result).extract[Seq[Map[String, Any]]]
 
-    // Connect and authenticate with your Algolia app
+    // Connect and authenticate with your Algolia app using your app ID and write API key
     {{> snippets/init}}
 
     // Save records in Algolia index

templates/swift/guides/search/saveObjectsMovies.mustache

@@ -16,7 +16,7 @@ func saveObjectsMovies() async throws {
     #endif
     let movies = try JSONDecoder().decode([AnyCodable].self, from: data!)
     
-    // Connect and authenticate with your Algolia app
+    // Connect and authenticate with your Algolia app using your app ID and write API key
     {{> snippets/init}}
 
     do {