eliminate unnecessary backslash-escaped quotes

docs/contrib/contribute.md

@@ -4,7 +4,7 @@ title: Contributing to Taskwarrior
 
 Help is needed in all areas of Taskwarrior development - design, coding, testing, support and marketing.
 Applicants must be friendly.
-Perhaps you are looking to help, but don\'t know where to start.
+Perhaps you are looking to help, but don't know where to start.
 You can of course [email us](mailto:taskwarrior-dev@googlegroups.com) but take a look at this list.
 Perhaps you have skills we are looking for, here are ways you may be able to help:
 
@@ -13,10 +13,10 @@ Perhaps you have skills we are looking for, here are ways you may be able to hel
     New users have a fresh approach that we can no longer achieve, while veteran users develop clever and crafty ways to use the product.
 
 -   Report bugs and odd behavior when you see it.
-    We don\'t necessarily know it\'s broken, unless you tell us.
+    We don't necessarily know it's broken, unless you tell us.
 
 -   Suggest enhancements.
-    We get lots of these, and it\'s great.
+    We get lots of these, and it's great.
     Some really good ideas have been suggested and implemented.
     Sure, some are out of scope, or plain crazy, but the stream of suggestions is fascinating to think about.
 
@@ -45,7 +45,7 @@ Perhaps you have skills we are looking for, here are ways you may be able to hel
 
 -   Fix a bug.
     Send a patch.
-    You\'ll need C++ skills for this.
+    You'll need C++ skills for this.
 
 -   Write a unit test.
     Improve an existing unit test.
@@ -55,8 +55,8 @@ Perhaps you have skills we are looking for, here are ways you may be able to hel
     Share your methodology, to inspire others.
 
 -   Encouragement.
-    Tell us what works for you, and what doesn\'t.
-    It\'s all good.
+    Tell us what works for you, and what doesn't.
+    It's all good.
 
 -   Donate! Help offset costs.