Adjust build-docs/action to make /docs dir if it doesn't exist (#42)

## Problem

Since `/docs` doesn't exist, the GH action `build-docs/action` cannot
run.

## Solution

Change file to check if `/docs` exists first; if it doesn't, create it;
if it does, move on.

## Type of Change

- [ ] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to not work as expected)
- [ ] This change requires a documentation update
- [x] Infrastructure change (CI configs, etc)
- [x] Non-code change (docs, etc)
- [ ] None of the above: (explain here)

## Test Plan

CI passes.

.github/actions/build-docs/action.yml

@@ -4,6 +4,16 @@ runs:
   using: 'composite'
   steps:
     - name: Write html file to docs directory
+      shell: bash
       run: |
+        # Check if the ./docs directory exists
+        if [ -d "./docs" ]; then
+          echo "Directory ./docs exists."
+        else
+          echo "Directory ./docs does not exist. Creating it now..."
+          mkdir ./docs
+        fi
+          
+        # Run the godoc command
         godoc -url pkg/github.com/pinecone-io/go-pinecone/pinecone/ > ./docs/index.html
-      shell: bash
+        echo "godoc command has been executed and the output has been saved to ./docs/index.html"