[skywalking] 01/01: Polish virtual cache doc

[wu...@apache.org]

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wusheng pushed a commit to branch wu-sheng-patch-1
in repository https://gitbox.apache.org/repos/asf/skywalking.git

commit 08868943c8fb0a0a2f51ff0727f2d4e801731c79
Author: 吴晟 Wu Sheng <wu...@foxmail.com>
AuthorDate: Wed Nov 9 15:44:40 2022 +0800

    Polish virtual cache doc
---
 docs/en/setup/service-agent/virtual-cache.md | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/docs/en/setup/service-agent/virtual-cache.md b/docs/en/setup/service-agent/virtual-cache.md
index f7a7e8b631..b0f4307b2e 100644
--- a/docs/en/setup/service-agent/virtual-cache.md
+++ b/docs/en/setup/service-agent/virtual-cache.md
@@ -10,7 +10,7 @@ The cache operation span should have
 - It is an **Exit** or **Local** span
 - **Span's layer == CACHE**
 - Tag key = `cache.type`, value = The type of cache system , e.g. redis
-- Tag key = `cache.op`, value = the operation of command , indicates the command is used for `write` or `read` operation
+- Tag key = `cache.op`, value = `read` or `write` , indicates the value of tag `cache.command` is used for `write` or `read` operation
 - Tag key = `cache.command`, value = the cache command , e.g. get,set,del
 - Tag key = `cache.key`, value = the cache key
-- If the cache system is in-memory (e.g. Guava-cache), agents' plugin would create a local span usually, and the span's peer would be null ,otherwise the peer is the network address(IP or domain) of Cache server.
\ No newline at end of file
+- If the cache system is in-memory (e.g. Guava-cache), agents' plugin would create a local span usually, and the span's peer would be null ,otherwise the peer is the network address(IP or domain) of Cache server.