refactor: Update variable names in app.py for clarity

app.py

@@ -48,8 +48,8 @@ def app():
                 pvt = gr.Textbox(label="Your Private Key", placeholder="Your Private Key will appear here, after successful SSL generation", type="text", interactive=False, show_copy_button=True, lines=10, max_lines=10)
                 pvtfile = gr.File(label="Download your Private Key")
             with gr.Column():
-                csr = gr.Textbox(label="Your SSL Certificate", placeholder="Your SSL Certificate will appear here, after successful SSL generation", type="text", interactive=False, show_copy_button=True, lines=10, max_lines=10)
-                csrfile = gr.File(label="Download your SSL Certificate")
+                csr = gr.Textbox(label="Your CSR", placeholder="Your CSR will appear here, after successful SSL generation", type="text", interactive=False, show_copy_button=True, lines=10, max_lines=10)
+                csrfile = gr.File(label="Download your CSR")
             with gr.Column():
                 crt = gr.Textbox(label="Your SSL Certificate", placeholder="Your SSL Certificate will appear here, after successful SSL generation", type="text", interactive=False, show_copy_button=True, lines=10, max_lines=10)
                 crtfile = gr.File(label="Download your SSL Certificate")