Fix grammatical typos

A few small things...

content/docs/api/db/pad/contents.lr

@@ -28,7 +28,7 @@ command line scripts.
 ## Template Usage
 
 A ready-configured pad is always available under the `site` name which
-allows you to easily discover other pages.  Here a basic example of
+allows you to easily discover other pages.  Here is a basic example of
 how to do this through the [get :ref](get/) method:
 
 ```html+jinja

content/docs/content/alts/contents.lr

@@ -4,7 +4,7 @@ summary: Alternatives allow you to localize or internationalize a site.
 ---
 body:
 
-One particular useful feature of Lektor is the ability to define alternatives
+One particularly useful feature of Lektor is the ability to define alternatives
 to a content file.  This allows you to translate your website into many
 different languages or to customize content specifically for some languages
 or regions.

content/docs/contents.lr

@@ -11,7 +11,7 @@ about how to use Lektor from both a developer's as well as an end user's
 point of view.  New to Lektor?  Then read about [what makes Lektor
 special :ref](what/).
 
-The documentation is work in progress and there will be areas that are
+The documentation is a work in progress and there will be areas that are
 lacking.  If you have any feedback or you want to help out with the
 documentation project you can head over to the
 [GitHub Repository :ext](https://github.com/lektor/lektor-website) of this website.

content/docs/guides/contents.lr

@@ -8,7 +8,7 @@ allow_comments: no
 ---
 body:
 
-Because Lektor is quite a generic system, sometimes I might not be quite
+Because Lektor is quite a generic system, sometimes it might not be quite
 obvious what the best course of action is.  This part of the documentation
-contains some guides that should help find inspiration for solving certain
+contains some guides that should help you find inspiration for solving certain
 problems.

content/docs/guides/sitemap/contents.lr

@@ -5,7 +5,7 @@ summary: Quick demo of how to build a custom sitemap.xml.
 body:
 
 If you want to have a `sitemap.xml` file for search engines this is something
-you can very easily create yourself.  All you need for that is a contents file
+you can very easily create yourself.  All you need is a contents file
 and a custom template.
 
 ## Contents File
@@ -23,7 +23,7 @@ _model: none
 This instructs Lektor to use the template `sitemap.xml` for this page.  We
 also give it the empty `none` model for good measure.
 
-!!! Starting with Lektor 2.0 you can also add `_discoverable: no` as field
+!!! Starting with Lektor 2.0 you can also add `_discoverable: no` as a field
 into the file to hide it from `.children`.  This is useful for such special
 pages which should be excluded from navigation or automatic link generation.
 

content/docs/project/structure/contents.lr

@@ -36,7 +36,7 @@ built into the final project.  Each folder within corresponds to a record
 and the data of it is stored in the file by the name `contents.lr` within
 which is a Lektor content file.  All other files are considered attachments.
 
-Here a basic example layout to get an idea how this can look like:
+Here is a basic example layout to get an idea how this can look like:
 
 ```
 content/
@@ -103,5 +103,5 @@ files in there are named `<plugin-id>.ini`.
 Lektor also supports [Data Bags :ref](../../content/databags/) which go into a
 folder named `databags/`.  These are files with some general information
 that can be accessed from templates.  For instance you could store menus and
-navigations there, API keys and much more.  This is generally just information 
+navigations there, API keys and much more.  This is generally just information
 you want to access from different places and maybe not keep in templates directly.

content/docs/templates/navigation/contents.lr

@@ -41,7 +41,7 @@ a child of the given path.  Based on that information we automatically
 add a class to the link.
 
 The index page requires a bit of special casing as we do not want it to
-be active if any of it's children are active.  So we just check if the
+be active if any of its children are active.  So we just check if the
 path of the current page is actually the path of the index page.
 
 ## Fully Automatic Navigation

content/downloads/contents.lr

@@ -11,12 +11,12 @@ height: 300
 ----
 class: 
 ----
-contents: 
+contents:
 #### text-block ####
 text:
 
 Lektor is an [Open Source Project](../license/) and freely available to
-download.  As it's currently still under heavy development and not all platforms
+download.  It's currently still under heavy development and not all platforms
 are equally well supported.
 
 ## Command Line Interface