Enable document-features feature as the required dependency is now packaged

[skip changelog]

gix-packetline-fix-metadata.diff

@@ -1,5 +1,5 @@
 --- gix-packetline-0.16.6/Cargo.toml	1970-01-01T00:00:01+00:00
-+++ gix-packetline-0.16.6/Cargo.toml	2023-09-13T19:32:47.281679+00:00
++++ gix-packetline-0.16.6/Cargo.toml	2023-09-14T18:23:29.740059+00:00
 @@ -20,7 +20,7 @@
      "LICENSE-*",
      "CHANGELOG.md",
@@ -9,14 +9,3 @@
  license = "MIT OR Apache-2.0"
  repository = "https://github.com/Byron/gitoxide"
  
-@@ -55,10 +55,6 @@
- version = "1.3.0"
- features = ["std"]
- default-features = false
--
--[dependencies.document-features]
--version = "0.2.0"
--optional = true
- 
- [dependencies.faster-hex]
- version = "0.8.0"

rust-gix-packetline.spec

@@ -14,7 +14,6 @@ URL:            https://crates.io/crates/gix-packetline
 Source:         %{crates_source}
 # Manually created patch for downstream crate metadata changes
 # * improve crate summary / description
-# * drop unused optional dependency that is only useful for building docs
 Patch:          gix-packetline-fix-metadata.diff
 
 BuildRequires:  cargo-rpm-macros >= 24
@@ -75,6 +74,18 @@ use the "blocking-io" feature of the "%{crate}" crate.
 %files       -n %{name}+blocking-io-devel
 %ghost %{crate_instdir}/Cargo.toml
 
+%package     -n %{name}+document-features-devel
+Summary:        %{summary}
+BuildArch:      noarch
+
+%description -n %{name}+document-features-devel %{_description}
+
+This package contains library source intended for building other packages which
+use the "document-features" feature of the "%{crate}" crate.
+
+%files       -n %{name}+document-features-devel
+%ghost %{crate_instdir}/Cargo.toml
+
 %package     -n %{name}+futures-io-devel
 Summary:        %{summary}
 BuildArch:      noarch