Update docs/product/explore/traces/index.mdx

Co-authored-by: Alex Krawiec <[email protected]>

Author: lizokm

docs/product/explore/traces/index.mdx

@@ -59,7 +59,7 @@ Search results are displayed as a list of traces. Each row corresponds to a sing
 - **Project**: The associated Sentry project.
 - **Trace Name**: Derived from the root transaction or first transaction.
 - **Matching Spans**: The number of spans matching your query versus the total spans in the trace.
-- **Timeline**: Visual representation of significant spans within the trace.
+- **Timeline**: A visual representation of significant spans within the trace.
 - **Duration**: Total time from the first to last span.
 - **Timestamp**: When the trace occurred (hover for exact time).
 - **Issues**: Links to any associated error issues.