[PATCH] Documentation/x86/boot.rst: minor improvement

[Cao jin <caoj.fnst@cn.fujitsu.com>]

Typo fix & file name update

Signed-off-by: Cao jin <caoj.fnst@cn.fujitsu.com>
---
 Documentation/x86/boot.rst | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Documentation/x86/boot.rst b/Documentation/x86/boot.rst
index 7fafc7ac00d7..c04afec90486 100644
--- a/Documentation/x86/boot.rst
+++ b/Documentation/x86/boot.rst
@@ -1379,7 +1379,7 @@ can be calculated as follows::
 In addition to read/modify/write the setup header of the struct
 boot_params as that of 16-bit boot protocol, the boot loader should
 also fill the additional fields of the struct boot_params as described
-in zero-page.txt.
+in zero-page.rst.
 
 After setting up the struct boot_params, the boot loader can load
 64-bit kernel in the same way as that of 16-bit boot protocol, but
@@ -1391,7 +1391,7 @@ In 64-bit boot protocol, the kernel is started by jumping to the
 
 At entry, the CPU must be in 64-bit mode with paging enabled.
 The range with setup_header.init_size from start address of loaded
-kernel and zero page and command line buffer get ident mapping;
+kernel and zero page and command line buffer get identity mapping;
 a GDT must be loaded with the descriptors for selectors
 __BOOT_CS(0x10) and __BOOT_DS(0x18); both descriptors must be 4G flat
 segment; __BOOT_CS must have execute/read permission, and __BOOT_DS
-- 
2.21.0