Update 3.1.0 release notes

Remove "incubating" from filenames.

Put "Lightbend Config" under Schematron Validator, not Code Generator.

Fix typos (can reject this if you want jiras and titles to match).
diff --git a/site/_releases/3.1.0.md b/site/_releases/3.1.0.md
index 595364b..2c7f155 100644
--- a/site/_releases/3.1.0.md
+++ b/site/_releases/3.1.0.md
@@ -6,7 +6,7 @@
 date: 2021-05-12
 summary: >
     Code generation backend, Schematron validation, variable improvements,
-    imporoved SAX conformance and performance, miscellaneous bug fixes and
+    improved SAX conformance and performance, miscellaneous bug fixes and
     improvements
 
 artifact-root: "https://dist.apache.org/repos/dist/dev/daffodil/3.1.0-rc1/"
@@ -14,13 +14,13 @@
 key-file: "https://downloads.apache.org/daffodil/KEYS"
 
 source-dist:
-    - "apache-daffodil-3.1.0-incubating-src.zip"
+    - "apache-daffodil-3.1.0-src.zip"
 
 binary-dist:
-    - "apache-daffodil-3.1.0-incubating-bin.tgz"
-    - "apache-daffodil-3.1.0-incubating-bin.zip"
-    - "apache-daffodil-3.1.0-incubating-bin.msi"
-    - "apache-daffodil-3.1.0.incubating-1.noarch.rpm"
+    - "apache-daffodil-3.1.0-bin.tgz"
+    - "apache-daffodil-3.1.0-bin.zip"
+    - "apache-daffodil-3.1.0-bin.msi"
+    - "apache-daffodil-3.1.0-1.noarch.rpm"
 
 scala-version: 2.12
 ---
@@ -95,8 +95,8 @@
 * {% jira 2431 %} CSV data causes abort
 * {% jira 2432 %} Need validation of tunable values
 * {% jira 2455 %} Large CSV file causes "Attempting to backtrack too far" exception
-* {% jira 2461 %} Intermittant test failure in schematron CLI tests
-* {% jira 2468 %} Uparsing an infoset for an 800mb csv file runs out of memory
+* {% jira 2461 %} Intermittent test failure in schematron CLI tests
+* {% jira 2468 %} Unparsing an infoset for an 800mb csv file runs out of memory
 * {% jira 2487 %} parser hangs on row with initial empty field in CSV-like data
 * {% jira 2492 %} Test fails on non-US locale
 * {% jira 2494 %} Fix user unfriendly issues with recent jline upgrade
@@ -111,7 +111,7 @@
 * {% jira 1503 %} Warning needed for length="0" being ignored.
 * {% jira 1605 %} Update Wiki based on CII best practices review
 * {% jira 2144 %} Standard schema project layout - suggested build.sbt is outdated
-* {% jira 2360 %} Comitted files that match .gitignore patterns
+* {% jira 2360 %} Committed files that match .gitignore patterns
 * {% jira 2430 %} ratCheck fails when run from the sbt console
 * {% jira 2434 %} Update sbt-rat plugin to 0.7.0
 * {% jira 2435 %} Prepare for 3.1.0
@@ -121,7 +121,7 @@
 * {% jira 2453 %} Debugger: support for displaying variable information
 * {% jira 2454 %} Eclipse - Not able to Compile or Daffodil/stage daffodil 3.0.0
 * {% jira 2463 %} Update Daffodil Incubator Status file/page
-* {% jira 2464 %} Document Apache Daffodil Maturity Model Assesment
+* {% jira 2464 %} Document Apache Daffodil Maturity Model Assessment
 * {% jira 2465 %} Remove requirement of DAFFODIL\_HOME for eclipse setup
 * {% jira 2467 %} Bump copyright years to 2021
 * {% jira 2469 %} Need to update unsupported features page
@@ -142,7 +142,7 @@
 expected to be fixed in the next release. These issues are:
 
 * {% jira 1422 %} disallow doctype decls in all XML & XSD that we read in
-* {% jira 2400 %} New SAX API causes performance degredations.
+* {% jira 2400 %} New SAX API causes performance degradations
 * {% jira 2512 %} Unordered sequences with initiated content or discriminators does not parse correctly
 
 #### Deprecation/Compatibility
@@ -176,10 +176,10 @@
 **Code Generator (runtime2)**
 
 * OS-Lib 0.7.6 <small>(new)</small>
-* Lightbend Config 1.4.1 <small>(new)</small>
 
 **Schematron Validator**
 
+* Lightbend Config 1.4.1 <small>(new)</small>
 * Saxon-HE 10.5 <small>(new)</small>
 
 **Test**