fix spelling and grammar in docs (#709)

docs/graphql/manual/hasura-cli/hasura_completion.rst

@@ -3,7 +3,7 @@
 Hasura CLI: hasura completion
 -----------------------------
 
-Generate auto completion code
+Generate auto-completion code
 
 Synopsis
 ~~~~~~~~

docs/graphql/manual/hasura-cli/hasura_login.rst

@@ -9,7 +9,7 @@ Synopsis
 ~~~~~~~~
 
 
-Browser based login to access your clusters and other information from hasura.io dashboard.
+Browser-based login to access your clusters and other information from hasura.io dashboard.
 
 ::
 

docs/graphql/manual/migrations/existing-project.rst

@@ -124,7 +124,7 @@ in the ``migrations/`` directory in your project.
 
 .. note::
 
-   Migrations are only created when using the Console though CLI.
+   Migrations are only created when using the Console through CLI.
 
 Step 6: Apply the migrations to another instance of the GraphQL engine
 ----------------------------------------------------------------------

docs/graphql/manual/mutations/update.rst

@@ -103,7 +103,7 @@ Using jsonb operators
 Update using **_append** operator
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 Update any ``jsonb`` column by appending it with given value. Since it is a json value, it should
-provided through a variable.
+be provided through a variable.
 
 Append the ``extra_info`` of an article:
 
@@ -230,7 +230,7 @@ Delete the key ``key3`` in the ``extra_info`` of an article:
 
 Update using **_delete_elem** operator
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-Update any ``jsonb`` column by deleting a array element with given index value. Input value should be a ``Int``.
+Update any ``jsonb`` column by deleting an array element with given index value. Input value should be a ``Int``.
 
 Delete the element at ``2`` in ``jsonb`` array ``["a", "b", "c"]`` of column ``extra_info`` of an article:
 

docs/graphql/manual/mutations/upsert.rst

@@ -2,7 +2,7 @@ Upsert mutation
 ===============
 
 To convert an **insert** mutation into an **upsert** one, you need to specify the unique or primary key constraint(s) and the
-columns to be updated in the case of a conflict or violation. You can specify a constraint using the ``constriant`` argument and
+columns to be updated in the case of a conflict or violation. You can specify a constraint using the ``constraint`` argument and
 update columns using the ``update_columns`` argument.
 
 .. note::
@@ -102,8 +102,8 @@ is the set of columns that is updated. For example, if your query as follows:
     }
 
 The column ``"is_premium"`` for the ``"Jack"`` row is set to its ``DEFAULT`` value because the union of all columns across objects
-is ``{name, email_sent, is_premium}``. However ou can explicitly control the columns that are updated on conflict using
-``update_columns`` as specified in following section.
+is ``{name, email_sent, is_premium}``. However, you can explicitly control the columns that are updated on conflict using
+``update_columns`` as specified in the following section.
 
 With non empty "update_columns"
 -------------------------------

docs/graphql/manual/queries/multiple-arguments.rst

@@ -1,6 +1,6 @@
 Using multiple arguments in a query
 ===================================
-Multiple arguments can be used together in the same query. For example, if you want to use the ``where`` argument to
+Multiple arguments can be used together in the same query. For example, you can use the ``where`` argument to
 filter the results and then use the ``order_by`` argument to sort them.
 
 For example, fetch a list of authors and only 2 of their published articles that are sorted by their date of publication:

docs/graphql/manual/queries/nested-object-queries.rst

@@ -9,7 +9,7 @@ Query using an array relationship
 The following is an example of a nested object query using the ``array relationship`` between an author and
 articles.
 
-Fetch a list of authors and a nested list of the each author’s articles:
+Fetch a list of authors and a nested list of each author’s articles:
 
 .. graphiql::
   :view_only:

docs/graphql/manual/queries/pagination.rst

@@ -94,7 +94,7 @@ Fetch 5 authors from the list of all authors, starting with the 6th one:
 
 Limit results in a nested object
 --------------------------------
-Fetch a list of authors and a list of 2 of each of their rticles:
+Fetch a list of authors and a list of 2 of each of their articles:
 
 .. graphiql::
   :view_only:

docs/graphql/manual/queries/query-filters.rst

@@ -20,7 +20,7 @@ For example, fetch data for an author whose name is "Sidney":
     }
 
 You can also use the nested ``articles`` object to filter rows from the ``author`` table. This query fetches a list of
-authors who have articles with rating greater than 4:
+authors who have articles with a rating greater than 4:
 
 .. code-block:: graphql
    :emphasize-lines: 3

docs/graphql/manual/schema/export-graphql-schema.rst

@@ -12,7 +12,7 @@ GraphQL schema:
 
 .. code-block:: bash
 
-  # If the GraphQL engine is running at at https://my-graphql-engine.com/v1alpha1/graphql,
+  # If the GraphQL engine is running at https://my-graphql-engine.com/v1alpha1/graphql,
   # without an access key
   gq https://my-graphql-engine.com/v1alpha1/graphql --introspect > schema.graphql