chore(#760): Updated wording in templates

.github/ISSUE_TEMPLATE/Bug_report.md

@@ -7,7 +7,10 @@ labels: bug
 
 ## Bug report
 
+Be sure to search existing issues since someone might have already raised this bug already.
+
 ### Description of the bug
+A short description of the bug.
 
 ### Steps to reproduce:
 Please include the command line and any supporting files (e.g. the profile, any other input files).
@@ -25,4 +28,4 @@ What actually happened, if possible include the output (or a screenshot as appro
 ### Additional context:
 - Which version of the generator?
 - Which version of Java are you using?
-- Any other information that may be relevant to reproduce & resolve the bug
+- Any other information that may be relevant to reproduce & resolve the bug

.github/ISSUE_TEMPLATE/Feature_request.md

@@ -9,4 +9,6 @@ labels: enhancement
 
 What would you like the generator to be able to do (differently)?   
 Which groups of users would it benefit?   
-If you have any ideas, how it could be achieved?
+If you have any ideas, how it could be achieved?
+
+Be sure to search existing issues since someone might have already asked something similar.

.github/ISSUE_TEMPLATE/Support_question.md

@@ -8,4 +8,6 @@ labels: question
 ## Question
 
 Ask your question here.  
-If there are supporting documents, screenshots or text that can help clarify your question, please attach them too.
+If there are supporting documents, screenshots or text that can help clarify your question, please attach them too.
+
+Be sure to search existing issues since someone might have already asked something similar.