Typos corrections

I've made a few small corrections, some spelling changes and typo fixes.
I've tried to respect regional spelling differences and avoided proposing hyphenating compound words.

 Please enter the commit message for your changes. Lines starting

docs/topics/deploy.rst

@@ -8,7 +8,7 @@ This section describes the different options you have for deploying your Scrapy
 spiders to run them on a regular basis. Running Scrapy spiders in your local
 machine is very convenient for the (early) development stage, but not so much
 when you need to execute long-running spiders or move spiders to run in
-production continously. This is where the solutions for deploying Scrapy
+production continuously. This is where the solutions for deploying Scrapy
 spiders come in.
 
 Popular choices for deploying Scrapy spiders are:

docs/topics/firebug.rst

@@ -118,7 +118,7 @@ they work as we expect.
 
 As you can see, the page markup is not very descriptive: the elements don't
 contain ``id``, ``class`` or any attribute that clearly identifies them, so
-we''ll use the ranking bars as a reference point to select the data to extract
+we'll use the ranking bars as a reference point to select the data to extract
 when we construct our XPaths.
 
 After using FireBug, we can see that each link is inside a ``td`` tag, which is

docs/topics/shell.rst

@@ -56,7 +56,7 @@ Available Shortcuts
  * ``view(response)`` - open the given response in your local web browser, for
    inspection. This will add a `\<base\> tag`_ to the response body in order
    for external links (such as images and style sheets) to display properly.
-   Note, however,that this will create a temporary file in your computer,
+   Note, however, that this will create a temporary file in your computer,
    which won't be removed automatically.
 
 .. _<base> tag: https://developer.mozilla.org/en-US/docs/Web/HTML/Element/base