Typographical changes to ensure consistency with docs (#740)

* Updated Dropdown Descriptions to match documentation

* Removed full stops and hyphens in field descriptions

* Removed hyphen on description on line 267

* Fixed typographical errors for Github node

* Fixed typo for Zoom Credentials

* Changed Postgres node description to match Postgres docs (https://github.com/n8n-io/n8n-docs/pull/30)

* Changed Rocketchat displayname to RocketChat

* Fixed typographical errors (and matched with docs) for Trello node descriptions

* Updated Jira node descriptions to match docs

packages/nodes-base/nodes/Trello/AttachmentDescription.ts

@@ -29,7 +29,7 @@ export const attachmentOperations = [
 			{
 				name: 'Get',
 				value: 'get',
-				description: 'Get the data of an attachments',
+				description: 'Get the data of an attachment',
 			},
 			{
 				name: 'Get All',

packages/nodes-base/nodes/Trello/ChecklistDescription.ts

@@ -44,17 +44,17 @@ export const checklistOperations = [
 			{
 				name: 'Get Checklist Items',
 				value: 'getCheckItem',
-				description: 'Get a specific Checklist on a card',
+				description: 'Get a specific checklist on a card',
 			},
 			{
 				name: 'Get Completed Checklist Items',
 				value: 'completedCheckItems',
-				description: 'Get the completed Checklist items on a card',
+				description: 'Get the completed checklist items on a card',
 			},
 			{
 				name: 'Update Checklist Item',
 				value: 'updateCheckItem',
-				description: 'Update an item in a checklist on a card.',
+				description: 'Update an item in a checklist on a card',
 			},
 		],
 		default: 'getAll',

packages/nodes-base/nodes/Trello/LabelDescription.ts

@@ -39,7 +39,7 @@ export const labelOperations = [
 			{
 				name: 'Get All',
 				value: 'getAll',
-				description: 'Returns all label for the board',
+				description: 'Returns all labels for the board',
 			},
 			{
 				name: 'Remove From Card',