Update the Alloy Linux and FreeBSD version support (#2724)

* Update the Linux version support

* Update FreeBSD info

* Update wording for lifecycle

docs/sources/introduction/supported-platforms.md

@@ -12,8 +12,9 @@ The following operating systems and hardware architecture are supported.
 
 ## Linux
 
-* Minimum version: kernel 2.6.32 or later
+* Minimum version: kernel 4.x or later
 * Architectures: AMD64, ARM64
+* Within the Linux distribution lifecycle
 
 ## Windows
 
@@ -27,5 +28,5 @@ The following operating systems and hardware architecture are supported.
 
 ## FreeBSD
 
-* Minimum version: FreeBSD 10 or later
+* Within the FreeBSD lifecycle
 * Architectures: AMD64