Update maximum file upload size information in FAQs

Clarified maximum file upload size details for OpenSign, including specific limits for self-hosted and cloud users.

Author: nxglabs

docs/docs/help/FAQs/Max File Upload Size.md

@@ -1,14 +1,14 @@
-### ❓ What is the default maximum file size?
+### ❓ What is the default maximum file size that can be uploaded to OpenSign?
 
 - **Self-Hosted Users:** Maximum file size is **80 MB**
 - **Cloud Users:** Maximum file size is **10 MB**  
-  *(Includes an additional +10 MB buffer to prevent signing failures)*
+  *(Includes an additional +10 MB buffer to prevent signing failures when you add images during signing which increases the file size.)*
 
 ---
 
 ### ❓ Can the file size limit be increased?
 
-- **Cloud Hosting:** Yes — on request, the limit can be increased **up to 90 MB**  
+- **Cloud Hosting:** Yes — on request, the limit can be increased **up to 90 MB for enterprise user**  
 - **Self-Hosting:** No — the limit is fixed at **80 MB** and cannot be modified  
 
 > ⚠️ **Note:** There is a hard server-side limit of **100 MB**, which cannot be exceeded.