Add NCMP Stub documentation to RTD

-add new pages fot Stubs
-fixed spleeting erros
-added file with accepatbel cps terms for spell check

Issue-ID: CPS-1858
Signed-off-by: ToineSiebelink <toine.siebelink@est.tech>
Change-Id: I71fdeb29b015067d208e404bed8ac53b03810c00
diff --git a/.gitignore b/.gitignore
index b4abc48..c59fc47 100755
--- a/.gitignore
+++ b/.gitignore
@@ -27,10 +27,10 @@
 .checkstyle
 
 /.tox
-/_build/*
 /__pycache__/*
 
 /docs/docs/
 /docs/.vscode/
+/docs/_build/*
 
 /test-tools/metrics-reports/