Update assemblies/assembly-customizing-the-appearance.adoc

Author: themr0c

assemblies/assembly-customizing-the-appearance.adoc

@@ -9,7 +9,7 @@ The {product} theme:: Default theme configurations to make your developer portal
 
 The Backstage theme:: Default theme configurations to make your developer portal look like a standard Backstage instance. For more information, see xref:ref-customize-rhdh-default-backstage_{context}[]
 
-You can change or disable particular parameters in a default theme or create a fully customized theme by modifying the `app-config-rhdh.yaml` file. From the the `app-config-rhdh.yaml` file, you can customize common theme components, including the following:
+You can change or disable particular parameters in a default theme or create a fully customized theme by modifying the `app-config-rhdh.yaml` file. From the `app-config-rhdh.yaml` file, you can customize common theme components, including the following:
 
 * Company name and logo
 * Font color, size, and style of text in paragraphs, headings, headers, and buttons