Add .gitattributes & normalize line endings (open-telemetry#1230)

Co-authored-by: Armin Ruech <[email protected]>

.gitattributes

@@ -0,0 +1,4 @@
+* text=auto eol=lf
+
+*.cmd text eol=crlf
+*.bat text eol=crlf

docfx.cmd

@@ -1,15 +1,15 @@
-SETLOCAL
-SETLOCAL ENABLEEXTENSIONS
-
-docfx.exe build docfx.json > docfx.log
-@IF NOT %ERRORLEVEL% == 0 (
-  type docfx.log
-  ECHO Error: docfx build failed. 1>&2
-  EXIT /B %ERRORLEVEL%
-)
-@type docfx.log
-@type docfx.log | findstr /C:"Build succeeded."
-@IF NOT %ERRORLEVEL% == 0 (
-  ECHO Error: you have introduced build warnings. 1>&2
-  EXIT /B %ERRORLEVEL%
-)
+SETLOCAL
+SETLOCAL ENABLEEXTENSIONS
+
+docfx.exe build docfx.json > docfx.log
+@IF NOT %ERRORLEVEL% == 0 (
+  type docfx.log
+  ECHO Error: docfx build failed. 1>&2
+  EXIT /B %ERRORLEVEL%
+)
+@type docfx.log
+@type docfx.log | findstr /C:"Build succeeded."
+@IF NOT %ERRORLEVEL% == 0 (
+  ECHO Error: you have introduced build warnings. 1>&2
+  EXIT /B %ERRORLEVEL%
+)

toc.yml

@@ -1,2 +1,2 @@
-- name: OpenTelemetry Specification
-  href: ./README.md
+- name: OpenTelemetry Specification
+  href: ./README.md