fix: fixed branch data bug and fixed diff metrics(#101)

* fix: fix com count value in getCommitData

* fix: update metadata metrics and change to separate behind and aheadby

* fix: moved branch variables so they are reset for each repo

* chore: fix linting issue and remove comments

---------

Co-authored-by: Adriel Perkins <adrielp@liatrio.com>
Co-authored-by: rhoofard <Ryan.Hoofard@blueyonder.com>

pkg/receiver/gitproviderreceiver/documentation.md

@@ -12,9 +12,9 @@ metrics:
     enabled: false
 ```
 
-### git.repository.branch.count
+### git.repository.branch.commit.aheadby.count
 
-Number of branches that exist in the repository
+Number of commits the branch is ahead of the default branch
 
 | Unit | Metric Type | Value Type |
 | ---- | ----------- | ---------- |
@@ -25,10 +25,11 @@ Number of branches that exist in the repository
 | Name | Description | Values |
 | ---- | ----------- | ------ |
 | repository.name | The full name of the Git repository | Any Str |
+| branch.name | The name of the branch in a given repository | Any Str |
 
-### git.repository.branch.diff
+### git.repository.branch.commit.behindby.count
 
-Difference in commits between the branch and main
+Number of commits the branch is behind the default branch
 
 | Unit | Metric Type | Value Type |
 | ---- | ----------- | ---------- |
@@ -41,6 +42,20 @@ Difference in commits between the branch and main
 | repository.name | The full name of the Git repository | Any Str |
 | branch.name | The name of the branch in a given repository | Any Str |
 
+### git.repository.branch.count
+
+Number of branches that exist in the repository
+
+| Unit | Metric Type | Value Type |
+| ---- | ----------- | ---------- |
+| 1 | Gauge | Int |
+
+#### Attributes
+
+| Name | Description | Values |
+| ---- | ----------- | ------ |
+| repository.name | The full name of the Git repository | Any Str |
+
 ### git.repository.branch.time
 
 Time the branch has existed