Update docs/spec/v1.0/verification_summary.md

Co-authored-by: Mark Lodato <lodatom@gmail.com>
Signed-off-by: Zhenyu (Adam) Wu <85357044+AdamZWu@users.noreply.github.com>

docs/spec/v1.0/verification_summary.md

@@ -191,15 +191,15 @@ of the other top-level fields, such as `subject`, see [Statement]._
 >
 > Map from [SlsaResult] to the number of the artifact's _transitive_ dependencies
 > that were verified at the indicated level. Absence of a given level of
-> [SlsaResult] MUST be interpreted as reporting _0_ dependencies at that level,
-> e.g. an empty `dependencyLevels` object means that the artifact has **no**
-> dependency at all (vs. a non-present, i.e. "null", `dependencyLevels` means
-> that the verifier does not disclose the dependency stats).
+> [SlsaResult] MUST be interpreted as reporting _0_ dependencies at that level.
+> A set but empty `dependencyLevels` object means that the artifact has **no**
+> dependency at all, while an unset or null `dependencyLevels` means that the
+> verifier makes no claims about the artifact's dependencies.
 >
 > Users MUST count each dependency only once per SLSA track, at the highest
 > level verified. For example, if a dependency meets `SLSA_BUILD_LEVEL_2`,
 > you include it with the count for `SLSA_BUILD_LEVEL_2` but not the count for
-> the other `SLSA_BUILD` levels.
+> `SLSA_BUILD_LEVEL_1`.
 
 <a id="slsaVersion"></a>
 `slsaVersion` _string, optional_
@@ -254,15 +254,16 @@ WARNING: This is just for demonstration purposes.
 
 </div>
 
-The result of evaluating an artifact (or set of artifacts) against SLSA.
-SHOULD contain one value per SLSA track:
+The result of evaluating an artifact (or set of artifacts) against SLSA tracks.
+SHOULD be one of these values:
 
 -   SLSA BUILD track:
     -   `SLSA_BUILD_LEVEL_0`
     -   `SLSA_BUILD_LEVEL_1`
     -   `SLSA_BUILD_LEVEL_2`
     -   `SLSA_BUILD_LEVEL_3`
--   FAILED (Indicates policy evaluation failed, optional)
+-   General policy evaluation track:
+    -   `FAILED`
 
 Note that each SLSA level implies the levels below it in the same track.
 For example, `SLSA_BUILD_LEVEL_3` means (`SLSA_BUILD_LEVEL_1` +

docs/spec/v1.1/verification_summary.md

@@ -191,15 +191,15 @@ of the other top-level fields, such as `subject`, see [Statement]._
 >
 > Map from [SlsaResult] to the number of the artifact's _transitive_ dependencies
 > that were verified at the indicated level. Absence of a given level of
-> [SlsaResult] MUST be interpreted as reporting _0_ dependencies at that level,
-> e.g. an empty `dependencyLevels` object means that the artifact has **no**
-> dependency at all (vs. a non-present, i.e. "null", `dependencyLevels` means
-> that the verifier does not disclose the dependency stats).
+> [SlsaResult] MUST be interpreted as reporting _0_ dependencies at that level.
+> A set but empty `dependencyLevels` object means that the artifact has **no**
+> dependency at all, while an unset or null `dependencyLevels` means that the
+> verifier makes no claims about the artifact's dependencies.
 >
 > Users MUST count each dependency only once per SLSA track, at the highest
 > level verified. For example, if a dependency meets `SLSA_BUILD_LEVEL_2`,
 > you include it with the count for `SLSA_BUILD_LEVEL_2` but not the count for
-> the other `SLSA_BUILD` levels.
+> `SLSA_BUILD_LEVEL_1`.
 
 <a id="slsaVersion"></a>
 `slsaVersion` _string, optional_
@@ -351,16 +351,17 @@ verifiers they add to their roots of trust.
 
 </div>
 
-The result of evaluating an artifact (or set of artifacts) against SLSA.
-SHOULD contain one value per SLSA track:
+The result of evaluating an artifact (or set of artifacts) against SLSA tracks.
+SHOULD be one of these values:
 
 -   SLSA BUILD track:
     -   `SLSA_BUILD_LEVEL_UNEVALUATED`
     -   `SLSA_BUILD_LEVEL_0`
     -   `SLSA_BUILD_LEVEL_1`
     -   `SLSA_BUILD_LEVEL_2`
     -   `SLSA_BUILD_LEVEL_3`
--   FAILED (Indicates policy evaluation failed, optional)
+-   General policy evaluation track:
+    -   `FAILED`
 
 Note that each SLSA level implies the levels below it in the same track.
 For example, `SLSA_BUILD_LEVEL_3` means (`SLSA_BUILD_LEVEL_1` +