* add a buffer to RAM and disk space requirements

* improve changelog

docs/changelog.md

 # Changelog
 
-The INJECT Exercise Platform (IXP) is released is different versions.
+The INJECT Exercise Platform (IXP) is released in different versions.
 Most significant changes between the releases are listed below.
 
 This list is not complete, as each new release also includes numerous fixes
@@ -10,8 +10,7 @@ and smaller improvements.
 
 ### Improved UI
 
-The platform was enhanced to provide a more appealing experience while ensuring
-that users have all the necessary information to use it efficiently:
+Improvements were made to the platform to create a better user experience and increase efficiency:
 
 - improved home page
     - added ability to view non-running exercises
@@ -29,9 +28,9 @@ that users have all the necessary information to use it efficiently:
 
 ### New options for exercise definition
 
-Additional optional features were added to the exercise definition format
+Additional optional features were added to the [exercise definition format](./tech/architecture/definitions/README.md)
 to enable you to create more complex and engaging exercises.
-The most important features are listed below:
+The most important changes are listed below:
 
 - ability to embed media (audio, video, and images) in injects
 - support for more file types in document viewer (video, audio, and SVGs)

docs/tech/installation/overview.md

@@ -13,10 +13,10 @@ you can refer to the [architecture overview](../architecture/overview.md) in the
 
 Before you begin, ensure that you have the following:
 
-- A server with at least 2 core CPU and 6 GB RAM
+- A server with at least 2 core CPU and 8 GB RAM
 - A 64-bit x86 architecture
 - Root or sudo access to the server
-- At least 3 GB of disk space, although more might be necessary to hold files uploaded during exercises
+- At least 4 GB of disk space, although more might be necessary to hold files uploaded during exercises
 
 These requirements ensure that the backend server can handle data processing efficiently while serving the frontend interface smoothly.