[Docs] fix typo in TSVB README (#3518) (#3531)

Fixes a small typo in TSVB README.md file.

Issue:
n/a

Signed-off-by: Kawika Avilla <kavilla414@gmail.com>
(cherry picked from commit 58279ce)
Signed-off-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

# Conflicts:
#	CHANGELOG.md

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

src/plugins/vis_type_timeseries/README.md

@@ -1 +1 @@
-Contains everything around TSVB (the editor, visualizatin implementations and backends).
+Contains everything around TSVB (the editor, visualization implementations and backends).