docs: spelling correction for "targetting" (#533)

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Synth log will be available here:
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Source-Link: googleapis/synthtool@15013ef

Author: yoshi-automation

README.md

@@ -372,7 +372,7 @@ Our client libraries follow the [Node.js release schedule](https://nodejs.org/en
 Libraries are compatible with all current _active_ and _maintenance_ versions of
 Node.js.
 
-Client libraries targetting some end-of-life versions of Node.js are available, and
+Client libraries targeting some end-of-life versions of Node.js are available, and
 can be installed via npm [dist-tags](https://docs.npmjs.com/cli/dist-tag).
 The dist-tags follow the naming convention `legacy-(version)`.
 

synth.metadata

@@ -4,71 +4,15 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/nodejs-error-reporting.git",
-        "sha": "242276fff3e81cfac7a7b8294273cced203bccd6"
+        "sha": "b108625292d604d1abaee74f2fabd4b66380a5dd"
       }
     },
     {
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "ba9918cd22874245b55734f57470c719b577e591"
+        "sha": "15013eff642a7e7e855aed5a29e6e83c39beba2a"
       }
     }
-  ],
-  "generatedFiles": [
-    ".eslintignore",
-    ".eslintrc.json",
-    ".gitattributes",
-    ".github/ISSUE_TEMPLATE/bug_report.md",
-    ".github/ISSUE_TEMPLATE/feature_request.md",
-    ".github/ISSUE_TEMPLATE/support_request.md",
-    ".github/PULL_REQUEST_TEMPLATE.md",
-    ".github/release-please.yml",
-    ".github/workflows/ci.yaml",
-    ".kokoro/.gitattributes",
-    ".kokoro/common.cfg",
-    ".kokoro/continuous/node10/common.cfg",
-    ".kokoro/continuous/node10/docs.cfg",
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-    ".kokoro/continuous/node12/samples-test.cfg",
-    ".kokoro/continuous/node12/system-test.cfg",
-    ".kokoro/continuous/node12/test.cfg",
-    ".kokoro/docs.sh",
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-    ".kokoro/presubmit/node10/common.cfg",
-    ".kokoro/presubmit/node12/common.cfg",
-    ".kokoro/presubmit/node12/samples-test.cfg",
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-    ".kokoro/trampoline.sh",
-    ".kokoro/trampoline_v2.sh",
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 }