Fix minor typos in documentation

Change-Id: I0c1468fc0f7f9a03ee7c23c2ca1b9debd136c671
Issue-ID: SDC-2315
Signed-off-by: kaihlavi <l.kaihlavirt@partner.samsung.com>
diff --git a/docs/installation.rst b/docs/installation.rst
index 960ae05..bfd9191 100644
--- a/docs/installation.rst
+++ b/docs/installation.rst
@@ -15,10 +15,10 @@
 - `Deploying SDC on a Linux VM for Development <https://wiki.onap.org/display/DW/Deploying+SDC+on+a+Linux+VM+for+Development>`_
 - `Using Vagrant-Onap for local deployment of SDC project <https://wiki.onap.org/display/DW/Deploying+SDC+on+a+Linux+VM+for+Development>`_
 
-Colection of commends used in deploying and monitoring sdc in OOM
+Collection of commands used in deploying and monitoring sdc in OOM
 - `SDC on OOM <https://wiki.onap.org/display/DW/SDC+on+OOM>`_
 
 
 SDC troubleshooting:
 
-- `trouble shooting guide and logging info <https://wiki.onap.org/display/DW/SDC+Troubleshooting>`_
+- `troubleshooting guide and logging info <https://wiki.onap.org/display/DW/SDC+Troubleshooting>`_