Update checklist item

.github/PULL_REQUEST_TEMPLATE.md

@@ -84,7 +84,7 @@ This is a checklist for PR authors. Please make sure to complete all tasks and c
     - [ ] I verified any copy / text shown in the product is localized by adding it to `src/languages/*` files and using the [translation method](https://github.com/Expensify/App/blob/4bd99402cebdf4d7394e0d1f260879ea238197eb/src/components/withLocalize.js#L60)
       - [ ] If any non-english text was added/modified, I verified the translation was requested/reviewed in #expensify-open-source and it was approved by an internal Expensify engineer. Link to Slack message:
     - [ ] I verified all numbers, amounts, dates and phone numbers shown in the product are using the [localization methods](https://github.com/Expensify/App/blob/4bd99402cebdf4d7394e0d1f260879ea238197eb/src/components/withLocalize.js#L60-L68)
-    - [ ] I verified any copy / text that was added to the app is correct English and approved by marketing by adding the `Waiting for Copy` label for a copy review on the original GH to get the correct copy.
+    - [ ] I verified any copy / text that was added to the app is grammatically correct in English. It adheres to proper capitalization guidelines (note: only the first word of header/labels should be capitalized), and is approved by marketing by adding the `Waiting for Copy` label for a copy review on the original GH to get the correct copy.
     - [ ] I verified proper file naming conventions were followed for any new files or renamed files. All non-platform specific files are named after what they export and are not named "index.js". All platform-specific files are named for the platform the code supports as outlined in the README.
     - [ ] I verified the JSDocs style guidelines (in [`STYLE.md`](https://github.com/Expensify/App/blob/main/contributingGuides/STYLE.md#jsdocs)) were followed
 - [ ] If a new code pattern is added I verified it was agreed to be used by multiple Expensify engineers

contributingGuides/REVIEWER_CHECKLIST.md

@@ -23,7 +23,7 @@
     - [ ] I verified that any new or modified comments were clear, correct English, and explained "why" the code was doing something instead of only explaining "what" the code was doing.
     - [ ] I verified any copy / text shown in the product is localized by adding it to `src/languages/*` files and using the [translation method](https://github.com/Expensify/App/blob/4bd99402cebdf4d7394e0d1f260879ea238197eb/src/components/withLocalize.js#L60)
     - [ ] I verified all numbers, amounts, dates and phone numbers shown in the product are using the [localization methods](https://github.com/Expensify/App/blob/4bd99402cebdf4d7394e0d1f260879ea238197eb/src/components/withLocalize.js#L60-L68)
-    - [ ] I verified any copy / text that was added to the app is correct English and approved by marketing by adding the `Waiting for Copy` label for a copy review on the original GH to get the correct copy.
+    - [ ] I verified any copy / text that was added to the app is grammatically correct in English. It adheres to proper capitalization guidelines (note: only the first word of header/labels should be capitalized), and is approved by marketing by adding the `Waiting for Copy` label for a copy review on the original GH to get the correct copy.
     - [ ] I verified proper file naming conventions were followed for any new files or renamed files. All non-platform specific files are named after what they export and are not named "index.js". All platform-specific files are named for the platform the code supports as outlined in the README.
     - [ ] I verified the JSDocs style guidelines (in [`STYLE.md`](https://github.com/Expensify/App/blob/main/contributingGuides/STYLE.md#jsdocs)) were followed
 - [ ] If a new code pattern is added I verified it was agreed to be used by multiple Expensify engineers