nasm.spec.in: fix mistakes in previous checkin

Fix small mistakes in previous nasm.spec.in patch.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

nasm.spec.in

diff --git a/nasm.spec.in b/nasm.spec.in
index 4bb2e5c..97f7bc0 100644
--- a/nasm.spec.in
+++ b/nasm.spec.in
@@ -17,8 +17,9 @@
 BuildRequires: perl
 BuildRequires: gcc
 BuildRequires: make
+BuildRequires: xz
 BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
-Obsoletes: nasm-rdoff
+Obsoletes: %{name}-rdoff
 
 %package doc
 Summary: Detailed manual for the Netwide Assembler
@@ -27,8 +28,7 @@
 BuildRequires: fontconfig
 BuildRequires: adobe-source-sans-pro-fonts
 BuildRequires: adobe-source-code-pro-fonts
-BuildRequires: xz
-Obsoletes: %{nasm}-doc < %{version}-%{release}
+Obsoletes: %{name}-doc < %{version}-%{release}
 
 %description
 NASM is the Netwide Assembler, a free portable assembler for the Intel