Fix some typos

Although it is spelling mistakes, it might make an affects
while reading.

Co-Authored-By: Dao Cong Tien tiendc@vn.fujitsu.com
Signed-off-by: Nguyen Hai Truong <truongnh@vn.fujitsu.com>

docs/helm/helm_verify.md

@@ -7,7 +7,7 @@ verify that a chart at the given path has been signed and is valid
 
 Verify that the given chart has a valid provenance file.
 
-Provenance files provide crytographic verification that a chart has not been
+Provenance files provide cryptographic verification that a chart has not been
 tampered with, and was packaged by a trusted provider.
 
 This command can be used to verify a local chart. Several other commands provide