Whitespace: Extra newline in linkage.md

Author: Havvy

src/linkage.md

@@ -210,6 +210,5 @@ a statically linked binary on MSVC you would execute:
 RUSTFLAGS='-C target-feature=+crt-static' cargo build --target x86_64-pc-windows-msvc
 ```
 
-
 [configuration option]: conditional-compilation.html
 [procedural macros]: procedural-macros.html