fix typo in blaze user manual.
@@ -3040,7 +3040,7 @@ in an environment closer to the current shell environment. Note that none of the
dependency graph used during the build. The query language is used
by two commands: query and cquery. The major difference between the
two commands is that query runs after the <a href='#loading-phase'>loading phase</a>
- and cquery runs after the <a href='#analysis-phase'>analysis phase</a>. These tool are an
+ and cquery runs after the <a href='#analysis-phase'>analysis phase</a>. These tools are an
invaluable aid to many software engineering tasks.
</p>
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