fix: extract PR body from correct variable (#172)

# Description

Extracts the PR body from the correct variable.

.github/workflows/default_slash_ops_command_ready_callable.yml

@@ -24,7 +24,12 @@ jobs:
         with:
           script: |
             // get the PR text and make sure that all items are checked
-            const prText = context.payload.pull_request.body;
+            const pr = await github.rest.pulls.get({
+              owner: context.payload.repository.owner.login,
+              repo: context.payload.repository.name,
+              pull_number: context.payload.client_payload.pull_request.number,
+            });
+            const prText = pr.data.body;
 
             prText.split('\n').forEach(line => {
               if (line.startsWith('- [ ]')) {
@@ -39,10 +44,10 @@ jobs:
                                   replace(/<!--[\s\S]*?-->/g, '');
 
             // update the PR text
-            github.rest.pulls.update({
-              owner: context.repo.owner,
-              repo: context.repo.repo,
-              pull_number: context.issue.number,
+            await github.rest.pulls.update({
+              owner: context.payload.repository.owner.login,
+              repo: context.payload.repository.name,
+              pull_number: context.payload.client_payload.pull_request.number,
               body: cleanPrText,
             });