build: align minimum build dependencies with ndn-cxx
* Recommend boost >= 1.65.1 and gcc >= 7.4.0
* Require clang >= 4.0, or Xcode >= 9.0 on macOS
* Silence an ABI-related diagnostic message from gcc on armv7
* Fix redundant-tags warning with gcc 10
* Add CentOS-specific instructions to docs/INSTALL.rst
* Add Xcode 11.5 to Travis CI
Refs: #5087, #5106
Change-Id: I70746729a132ecb07d4788934385bb403039dba9
diff --git a/docs/named_data_theme/layout.html b/docs/named_data_theme/layout.html
index 937f8e2..c9fb5c1 100644
--- a/docs/named_data_theme/layout.html
+++ b/docs/named_data_theme/layout.html
@@ -38,7 +38,7 @@
<h3>{{ _('Table Of Contents') }}</h3>
{{ toctree(includehidden=True) }}
- <h3>{{ _('Additional documenation') }}</h3>
+ <h3>{{ _('Additional documentation') }}</h3>
<ul>
<li class="toctree-l1"><a class="reference external" href="https://redmine.named-data.net/projects/nfd/wiki">NFD Wiki</a></li>
<li class="toctree-l1"><a class="reference internal" href="doxygen/annotated.html">API documentation (doxygen)</a></li>