docs: remove duplicated words from tutorials and CLI reference

examples/tutorials/astro.md

@@ -1,5 +1,5 @@
 ---
-last_modified: 2025-09-29
+last_modified: 2026-08-25
 title: "Build Astro with Deno"
 description: "Step-by-step tutorial on building web applications with Astro and Deno. Learn how to scaffold projects, create dynamic pages, implement SSR, and deploy your Astro sites using Deno's Node.js compatibility."
 url: /examples/astro_tutorial/
@@ -42,7 +42,7 @@ this will set us up with a basic Astro project structure, including a
 ## Start the Astro server
 
 We can start the local Astro server with the `dev` task. In your terminal,
-change directory into your new project and run run
+change directory into your new project and run
 
 ```sh
 deno task dev

examples/tutorials/grafana.md

@@ -1,5 +1,5 @@
 ---
-last_modified: 2026-06-15
+last_modified: 2026-08-25
 title: "How to export telemetry data to Grafana"
 description: "Complete guide to exporting telemetry data with OpenTelemetry and Grafana. Learn how to configure collectors, visualize traces, and monitor application performance."
 url: /examples/grafana_tutorial/
@@ -105,7 +105,7 @@ and **Password / API Token** (you will have to generate one).
 
 ![Configuring OTel in Grafana Cloud](./images/how-to/grafana/grafana-3.png)
 
-Next, add the following to your `otel-collector.yml` file to define how how
+Next, add the following to your `otel-collector.yml` file to define how
 telemetry data should be collected and exported to Grafana Cloud:
 
 ```yml title="otel-collector.yml"

examples/tutorials/honeycomb.md

@@ -1,5 +1,5 @@
 ---
-last_modified: 2026-06-15
+last_modified: 2026-08-25
 title: "How to export telemetry data to Honeycomb"
 description: "Complete guide to exporting telemetry data with OpenTelemetry and Honeycomb.io. Learn how to configure collectors, visualize traces, and monitor application performance."
 url: /examples/honeycomb_tutorial/
@@ -82,7 +82,7 @@ the container. The file is renamed to `/otel-config.yml` inside the container.
 run when the container starts. It tells the OpenTelemetry Collector to use the
 configuration file we copied in the previous step.
 
-Next, add the following to your `otel-collector.yml` file to define how how
+Next, add the following to your `otel-collector.yml` file to define how
 telemetry data should be collected and exported to Honeycomb:
 
 ```yml title="otel-collector.yml"

runtime/reference/cli/env_variables.md

@@ -1,5 +1,5 @@
 ---
-last_modified: 2026-07-02
+last_modified: 2026-08-25
 title: "Configuring Deno behavior"
 ---
 
@@ -113,8 +113,8 @@ The npm registry to use when loading modules via
 
 Deno is able to handle network requests through a proxy server, useful for
 various reasons such as security, caching, or accessing resources behind a
-firewall. The runtime supports supports proxies for module downloads and the Web
-standard `fetch` API.
+firewall. The runtime supports proxies for module downloads and the Web standard
+`fetch` API.
 
 Deno reads proxy configuration from environment variables: `HTTP_PROXY`,
 `HTTPS_PROXY` and `NO_PROXY`.

runtime/reference/cli/jupyter.md

@@ -1,5 +1,5 @@
 ---
-last_modified: 2025-11-05
+last_modified: 2026-08-26
 title: "Jupyter Kernel for Deno"
 oldUrl: /runtime/manual/tools/jupyter/
 openGraphLayout: "/open_graph/cli-commands.jsx"
@@ -57,7 +57,7 @@ for displaying rich content in your notebooks
 
 ---
 
-The easiest way to provide a rich output is to return an object that that has a
+The easiest way to provide a rich output is to return an object that has a
 `[Symbol.for("Jupyter.display")]` method.
 
 This method should return a dictionary mapping a MIME type to a value that
@@ -86,9 +86,9 @@ You can also use `Deno.jupyter.$display` instead of typing
 
 :::
 
-This is a regular function, so you you can use any library you want to format
-the output - eg. use [`@std/fmt/colors`](/runtime/reference/std/fmt/) to provide
-a colorful output:
+This is a regular function, so you can use any library you want to format the
+output - eg. use [`@std/fmt/colors`](/runtime/reference/std/fmt/) to provide a
+colorful output:
 
 ```ts
 import * as colors from "jsr:@std/fmt/colors";