fix typos

Author: SkypLabs

img/centralized.png renamed to img/centralised.png

@@ -71,7 +71,7 @@ <h2>What can we do with that ?</h2>
 					<section>
 						<h2>Different VCS architectures</h2>
 						<p>Local</p>
-						<p>Centralized</p>
+						<p>Centralised</p>
 						<p>Distributed</p>
 					</section>
 
@@ -92,26 +92,26 @@ <h2>Local VCS</h2>
 					</section>
 
 					<section>
-						<h2>Centralized VCS</h2>
+						<h2>Centralised VCS</h2>
 						<p class="fragment">Made for dealing with the collaboration issue</p>
 						<p class="fragment">One single remote server</p>
 						<p class="fragment">Requires to know what other people are doing</p>
 						<p class="fragment">Examples : <a href="https://savannah.nongnu.org/projects/cvs">CVS</a>, <a href="https://subversion.apache.org/">Subversion</a></p>
 					</section>
 
 					<section>
-						<h2>Centralized VCS</h2>
+						<h2>Centralised VCS</h2>
 						<figure>
-							<img src="img/centralized.png" alt="Centralized VCS" style="height: 520px; width: 748px">
-							<figcaption style="font-style: italic; font-size: .5em">Centralized VCS - Reference: <a href="http://git-scm.com/book/en/v2">Pro Git, 2nd edition</a></figcaption>
+							<img src="img/centralised.png" alt="Centralised VCS" style="height: 520px; width: 748px">
+							<figcaption style="font-style: italic; font-size: .5em">Centralised VCS - Reference: <a href="http://git-scm.com/book/en/v2">Pro Git, 2nd edition</a></figcaption>
 						</figure>
 					</section>
 
 					<section>
 						<h2>Distributed VCS</h2>
 						<p class="fragment">Full local copy of the remote repository</p>
 						<p class="fragment">Can deal with several remote repositories</p>
-						<p class="fragment">Several types of workflows</p>
+						<p class="fragment">Several types of workflow</p>
 						<p class="fragment">Examples : <a href="http://www.git-scm.com">Git</a>, <a href="https://www.mercurial-scm.org/">Mercurial</a></p>
 					</section>
 
@@ -130,13 +130,13 @@ <h2>Why using Git ?</h2>
 					<p class="fragment">Strong support of non-linear development</p>
 					<p class="fragment">Ables to handle large projects efficiently</p>
 					<p class="fragment">Most VCS used these days</p>
-					<p class="fragment">Free and open source</p>
+					<p class="fragment">Free and open-source</p>
 				</section>
 
 				<section>
 					<section>
 						<h2>Git basics</h2>
-							<p>To initialize a Git repository in an existing directory :</p>
+							<p>To initialise a Git repository in an existing directory :</p>
 							<pre><code data-trim>
 git init
 							</code></pre>
@@ -152,7 +152,7 @@ <h2>Git basics</h2>
 							<pre><code data-trim>
 git clone git@github.com:docker/docker.git
 							</code></pre>
-							<p>The above command line will clone the official repository of the <a href="https://www.docker.com/">Docker</a> project</p>
+							<p>The above command-line will clone the official repository of the <a href="https://www.docker.com/">Docker</a> project</p>
 					</section>
 
 					<section>
@@ -291,16 +291,16 @@ <h2>The rebase feature</h2>
 				<section>
 					<section>
 						<h2>Different workflows</h2>
-						<p>Centralized</p>
+						<p>Centralised</p>
 						<p>Integration-manager</p>
 						<p>Dictator and lieutenant</p>
 					</section>
 
 					<section>
-						<h2>Centralized</h2>
+					<h2>Centralised</h2>
 						<figure>
-							<img src="img/centralized_workflow.png" alt="Centralized workflow">
-							<figcaption style="font-style: italic; font-size: .5em">Centralized workflow - Reference: <a href="http://git-scm.com/book/en/v2">Pro Git, 2nd edition</a></figcaption>
+							<img src="img/centralised_workflow.png" alt="Centralised workflow">
+							<figcaption style="font-style: italic; font-size: .5em">Centralised workflow - Reference: <a href="http://git-scm.com/book/en/v2">Pro Git, 2nd edition</a></figcaption>
 						</figure>
 					</section>
 
@@ -343,7 +343,7 @@ <h2>Self-hosted servers</h2>
 
 					<section>
 						<h2>Common features</h2>
-						<p class="fragment">Manage privilegies</p>
+						<p class="fragment">Manage privileges</p>
 						<p class="fragment">Pull requests / Merge requests</p>
 						<p class="fragment">Issues</p>
 						<p class="fragment">Wiki</p>