Update README.md (#129)

* Update latest version

* Update details about delta value

* Fix lint issue

README.md

@@ -61,7 +61,7 @@ jobs:
 
       - name: Add coverage to PR
         id: jacoco
-        uses: madrapps/jacoco-report@v1.6.1
+        uses: madrapps/jacoco-report@v1.7.0
         with:
           paths: |
             ${{ github.workspace }}/**/build/reports/jacoco/prodNormalDebugCoverage/prodNormalDebugCoverage.xml,
@@ -76,6 +76,16 @@ jobs:
 <br>
 <img src="/preview/multi-module-screenshot.png" alt="multi-module screenshot" title="multi-module screenshot" width="700" />
 
+### Understanding the Coverage Report
+
+- The "delta" (the negative value next to the coverage) represents the percentage of newly added or modified lines of code that are not covered by unit tests.
+  It calculates the difference in test coverage based solely on the changes made in the current commit or pull request.
+  For example, if 10 lines of code are modified or added, and 8 of those lines are covered by unit tests, the "delta"
+  would be -20%, indicating 20% of the newly changed code is untested. However, the "delta" has limitations. It can never
+  be positive, meaning if you add more unit tests to cover existing, unmodified code, this additional coverage is
+  not reflected in the delta. The metric only considers lines directly changed in the current set of modifications,
+  as there is no mechanism to track improvements in coverage for pre-existing code that hasn't been altered.
+
 ### Example Project
 
 For a working project refer to [jacoco-playgound](https://github.com/thsaravana/jacoco-playground). Check out the PR's
@@ -111,7 +121,7 @@ refer [jacoco-android-playground](https://github.com/thsaravana/jacoco-android-p
    ```yaml
    - name: Jacoco Report to PR
      id: jacoco
-     uses: madrapps/jacoco-report@v1.6.1
+     uses: madrapps/jacoco-report@v1.7.0
      with:
        paths: ${{ github.workspace }}/build/reports/jacoco/testCoverage/testCoverage.xml
        token: ${{ secrets.GITHUB_TOKEN }}
@@ -132,7 +142,7 @@ refer [jacoco-android-playground](https://github.com/thsaravana/jacoco-android-p
    ```yaml
    - name: Jacoco Report to PR
      id: jacoco
-     uses: madrapps/jacoco-report@v1.6.1
+     uses: madrapps/jacoco-report@v1.7.0
      with:
        paths: |
          ${{ github.workspace }}/**/build/reports/jacoco/**/prodNormalDebugCoverage.xml,
@@ -152,7 +162,7 @@ refer [jacoco-android-playground](https://github.com/thsaravana/jacoco-android-p
    ```yaml
    - name: Jacoco Report to PR
      id: jacoco
-     uses: madrapps/jacoco-report@v1.6.1
+     uses: madrapps/jacoco-report@v1.7.0
      with:
        paths: ${{ github.workspace }}/build/reports/jacoco/testCoverage/testCoverage.xml
        token: ${{ secrets.GITHUB_TOKEN }}