[Patch] DSC Spec: Fix a typo error "enty" to "entry"

[Yonghong Zhu <yonghong.zhu@intel.com>]

Cc: Liming Gao <liming.gao@intel.com>
Cc: Michael Kinney <michael.d.kinney@intel.com>
Cc: Kevin W Shaw <kevin.w.shaw@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Yonghong Zhu <yonghong.zhu@intel.com>
---
 2_dsc_overview/23_[defines]_section_processing.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/2_dsc_overview/23_[defines]_section_processing.md b/2_dsc_overview/23_[defines]_section_processing.md
index 95c2893..a7e8680 100644
--- a/2_dsc_overview/23_[defines]_section_processing.md
+++ b/2_dsc_overview/23_[defines]_section_processing.md
@@ -53,11 +53,11 @@ The format for entries in this section is:
 
 `Name = Value`
 
 If the `PREBUILD` and/or `POSTBUILD` entries are specified, value must be a
 tool that can be executed.  If the value contains space characters, then the
-value must be a quoted string. The `PREBUILD` and `POSTBUILD` enty support
+value must be a quoted string. The `PREBUILD` and `POSTBUILD` entry support
 multiple arguments, and tool will convert the arguments that are WORKSPACE or
 PACKAGES_PATH relative paths to absolute paths. Quotes may be used for arguments
 that have spaces or special characters. The `build` tool suspends processing of
 the DSC file if the `PREBUILD` entry is present, calls the script, and either
 terminates or continues processing the DSC file depending on the exit code from
-- 
2.6.1.windows.1