Fix some grammar mistakes

abp_io/AbpIoLocalization/AbpIoLocalization/Admin/Localization/Resources/en.json

@@ -267,7 +267,7 @@
     "Permission:PaymentRequest": "Payment Request",
     "CreatorEmailAddress": "Creator email address",
     "EmailSendDate": "Email send date",
-    "PaymentRequestsOf{0}Organization": "Payment request of \"{0}\" organization",
+    "PaymentRequestsOf{0}Organization": "Payment requests of \"{0}\" organization",
     "PaymentDetails": "Payment Details",
     "PaymentProduct": "Payment Product",
     "ProductName": "Product Name",

abp_io/AbpIoLocalization/AbpIoLocalization/Commercial/Localization/Resources/en.json

@@ -128,13 +128,13 @@
     "YourFullName": "Your full name",
     "EmailField": "E-mail Address",
     "YourEmailAddress": "Your e-mail address",
-    "HowMayWeHelpYou": "How may we help you",
+    "HowMayWeHelpYou": "How may we help you?",
     "SendMessage": "Send Message",
     "Success": "Success",
-    "WeWillReplyYou": "Your message is sent! We will reply you in a short time.",
+    "WeWillReplyYou": "Your message has been sent! We will reply to you shortly.",
     "GoHome": "Go Home",
     "CreateLiveDemo": "Create Live Demo",
-    "RegisterToTheNewsletter": "Register to the newsletter to get information on happenings about ABP.IO, like new releases.",
+    "RegisterToTheNewsletter": "Register for the newsletter to receive information regarding ABP.IO, including new releases etc.",
     "EnterYourEmailOrLogin": "Enter your e-mail address to create your demo or <a href=\"{0}\">Login</a> using your existing account.",
     "ApplicationTemplate": "Application Template",
     "ApplicationTemplateExplanation": "Application startup template is used to create a new web application.",