Adding a reference to GNU LD manual to Kernel Initialization. Part 1.

Initialization/linux-initialization-1.md

@@ -47,6 +47,9 @@ We can see definition of this section in the [arch/x86/kernel/vmlinux.lds.S](htt
 } :text = 0x9090
 ```
 
+The ADDR keyword above returns the absolute address (here means virtual address) of the named section. The AT keyword above specifies the load address (here means physical address) of the section. The full syntax of section definition is defined in the [Using ld The GNU linker](https://ftp.gnu.org/old-gnu/Manuals/ld-2.9.1/html_node/ld_21.html). 
+
+
 Besides the definition of the `.text` section, we can understand default virtual and physical addresses from the linker script. Note that address of the `_text` is location counter which is defined as:
 
 ```

contributors.md

@@ -129,3 +129,4 @@ Thank you to all contributors:
 * [Marco Torsello](https://github.com/md1512)
 * [Bruno Meneguele](https://github.com/bmeneguele)
 * [Sebastian Fricke](https://github.com/initBasti)
+* [Zhouyi Zhou](https://github.com/zhouzhouyi-hub)