Update grammar

Signed-off-by: Hartanto Ario Widjaya <tanto259@users.noreply.github.com>

Author: tanto259

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -5,9 +5,9 @@ body:
   - type: markdown
     attributes:
       value: |
-        Thank you for submitting a bug report. Please fill up the information below and we will get back to you as soon as possible.
+        Thank you for submitting a bug report. Please fill in the information below and we will get back to you as soon as possible.
 
-        Before opening an issue, please search our existing issue: https://github.com/openmainframeproject/cobol-programming-course/issues. 
+        Before opening an issue, please search our existing issues: https://github.com/openmainframeproject/cobol-programming-course/issues. 
   - type: dropdown
     attributes:
       label: Course Details

.github/ISSUE_TEMPLATE/feature_request.yml

@@ -5,7 +5,9 @@ body:
   - type: markdown
     attributes:
       value: |
-        Thank you for submitting a feature request. Please fill up the information below and we will get back to you as soon as possible.
+        Thank you for submitting a feature request. Please fill in the information below and we will get back to you as soon as possible.
+  
+        Before opening a feature request, please search our existing issues: https://github.com/openmainframeproject/cobol-programming-course/issues. 
   - type: dropdown
     attributes:
       label: Course Details

.github/PULL_REQUEST_TEMPLATE/pull_request_template.md

@@ -9,9 +9,9 @@ Fixes # (issue)
 What type of changes does your PR introduce to the COBOL Programming Course? _Put an `x` in the boxes that apply._
 
 - [ ] Bug fix (change which fixes one or more issues)
-- [ ] New feature (change which adds functionality or feature to the course)
-- [ ] Translations (change which adds or modify translations of the course)
-- [ ] Documentation (change which modify documentation related to the course)
+- [ ] New feature (change which adds functionality or features to the course)
+- [ ] Translations (change which adds or modifies translations of the course)
+- [ ] Documentation (change which modifies documentation related to the course)
 - [ ] This change requires an update to the course's z/OS environment
 
 ## Checklist:

ROADMAP.md

@@ -1,6 +1,6 @@
 # Roadmap
 
-These roadmap list out the possible and planned future contents for the COBOL Programming Course. If you are interested in contributing content, please review our [contribution guidelines](https://github.com/openmainframeproject/cobol-programming-course/blob/master/CONTRIBUTING.md).
+These roadmap lists out the possible and planned future contents for the COBOL Programming Course. If you are interested in contributing content, please review our [contribution guidelines](https://github.com/openmainframeproject/cobol-programming-course/blob/master/CONTRIBUTING.md).
 
 ## In-Progress Future Contents
 

SECURITY.md

@@ -2,11 +2,11 @@
 
 ## Considerations
 
-The COBOL Programming Course does not produce any kind of software. This project produces a technical course aimed to educate people on COBOL programming. The output of this project came in the form of PDF documents detailing the course content. A Markdown version is also available on the repository.
+The COBOL Programming Course does not produce any kind of software. This project produces a technical course aimed to educate people on COBOL programming. The output of this project is in the form of PDF documents detailing the course content. A Markdown version is also available on the repository.
 
 ## Supported Version
 
-Only the [latest version](https://github.com/openmainframeproject/cobol-programming-course/releases/latest) of the course is supported with security updates.
+Only the [latest version](https://github.com/openmainframeproject/cobol-programming-course/releases/latest) of the course is supported.
 
 ## Reporting a Vulnerability