[PATCH proxmox] installer-types: align documentation of hdsize for btrfs with lvm & zfs

[Shannon Sterz <s.sterz@proxmox.com>]

to avoid confusion. the hdsize is used to determine how much space is
available for partitioning. it is not the size of the btrfs partition
itself. the `LvmOptions` and `ZfsOptions` already specify this
correctly, so align the documentation here to avoid confusion.

Signed-off-by: Shannon Sterz <s.sterz@proxmox.com>
---
 proxmox-installer-types/src/answer.rs | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/proxmox-installer-types/src/answer.rs b/proxmox-installer-types/src/answer.rs
index 8490d3d6..f07d9f7f 100644
--- a/proxmox-installer-types/src/answer.rs
+++ b/proxmox-installer-types/src/answer.rs
@@ -957,8 +957,7 @@ pub struct LvmOptions {
 /// Btrfs-specific filesystem options.
 pub struct BtrfsOptions {
     #[serde(skip_serializing_if = "Option::is_none")]
-    /// Size of the root partition. Optional, will be heuristically determined if
-    /// unset.
+    /// Size of the root disk. Optional, will be heuristically determined if unset.
     pub hdsize: Option<f64>,
     #[serde(skip_serializing_if = "Option::is_none")]
     /// RAID level to use.
-- 
2.47.3