manuals: Spellcheck and capitalization fixes

- Spelling fixes found using Emacs' spelling checker
  configured for US English
- Fixes for some capitalization issues, especially some
  project names (QEMU, openSUSE, BusyBox), that were not
  consistently used with the same capitalization anyway.
- A few whitespace fixes too

(From yocto-docs rev: 05d69f17490dcc4933dcd85e57d9db53b912084a)

Signed-off-by: Michael Opdenacker <michael.opdenacker@bootlin.com>
Reviewed-by: Nicolas Dechesne <nicolas.dechesne@linaro.org>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

documentation/toaster-manual/setup-and-use.rst

@@ -362,7 +362,7 @@ Perform the following steps to install Toaster:
 
       /etc/httpd/conf.d/toaster.conf
 
-    If you are using OpenSUSE, put it here::
+    If you are using openSUSE, put it here::
 
       /etc/apache2/conf.d/toaster.conf
 
@@ -380,13 +380,13 @@ Perform the following steps to install Toaster:
             Require all granted
          </IfModule>
       </Directory>
-    
+
       <Directory /var/www/toaster/poky/bitbake/lib/toaster/toastermain>
          <Files "wsgi.py">
             Require all granted
          </Files>
       </Directory>
-    
+
       WSGIDaemonProcess toaster_wsgi python-path=/var/www/toaster/poky/bitbake/lib/toaster:/var/www/toaster/.local/lib/python3.4/site-packages
       WSGIScriptAlias / "/var/www/toaster/poky/bitbake/lib/toaster/toastermain/wsgi.py"
       <Location />
@@ -402,7 +402,7 @@ Perform the following steps to install Toaster:
       $ chmod +x bitbake/lib/toaster/toastermain/wsgi.py
 
     Finally, restart Apache to make sure all new configuration is loaded. For Ubuntu,
-    Debian, and OpenSUSE use::
+    Debian, and openSUSE use::
 
       $ sudo service apache2 restart