Fix typos in resource comments and summaries

Corrected "Invalis" to "Invalid" in resource string summaries and XML comments. Also fixed "destinationTyp;" to "destinationType" in resource comments for clarity. No functional changes made.

Author: BlaiseD

src/AutoMapper.Extensions.ExpressionMapping/Properties/Resources.Designer.cs

@@ -149,6 +149,6 @@
   </data>
 	<data name="invalidTypeMappingsFormat" xml:space="preserve">
     <value>Invalid type mappings. Source Type: {0}, Destination Type: {1}.</value>
-    <comment>0=sourceType; 1=destinationTyp;</comment>
+    <comment>0=sourceType; 1=destinationType</comment>
   </data>
 </root>